In 2023, the U.S. Consumer Price Index was 309.42, and is projected to increase to 352.27 by 2029. The base period was 1982-84. The monthly CPI for all urban consumers in the U.S. can be accessed here. After a time of high inflation, the U.S. inflation rateis projected fall to two percent by 2027. United States Consumer Price Index ForecastIt is projected that the CPI will continue to rise year over year, reaching 325.6 in 2027. The Consumer Price Index of all urban consumers in previous years was lower, and has risen every year since 1992, except in 2009, when the CPI went from 215.30 in 2008 to 214.54 in 2009. The monthly unadjusted Consumer Price Index was 296.17 for the month of August in 2022. The U.S. CPI measures changes in the price of consumer goods and services purchased by households and is thought to reflect inflation in the U.S. as well as the health of the economy. The U.S. Bureau of Labor Statistics calculates the CPI and defines it as, "a measure of the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services." The BLS records the price of thousands of goods and services month by month. They consider goods and services within eight main categories: food and beverage, housing, apparel, transportation, medical care, recreation, education, and other goods and services. They aggregate the data collected in order to compare how much it would cost a consumer to buy the same market basket of goods and services within one month or one year compared with the previous month or year. Given that the CPI is used to calculate U.S. inflation, the CPI influences the annual adjustments of many financial institutions in the United States, both private and public. Wages, social security payments, and pensions are all affected by the CPI.

This table contains 18 series, with data starting from 1979 (not all combinations necessarily have data for all years). This table contains data described by the following dimensions (Not all combinations are available): Geography (1 items: Canada ...) Alternative measures (18 items: Consumer Price Index (CPI) excluding food; energy and the effect of indirect taxes; seasonally adjusted; Consumer Price Index (CPI) excluding the effect of indirect taxes; seasonally adjusted; Consumer Price Index (CPI) excluding the effect of indirect taxes; Consumer Price Index (CPI) excluding food; energy and the effect of indirect taxes ...).

The Consumer Price Index (CPI) is a measure of the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services. Indexes are available for the U.S. and various geographic areas. Average price data for select utility, automotive fuel, and food items are also available. Prices for the goods and services used to calculate the CPI are collected in 75 urban areas throughout the country and from about 23,000 retail and service establishments. Data on rents are collected from about 43,000 landlords or tenants. More information and details about the data provided can be found at http://www.bls.gov/cpi

This table contains 13 series, with data from 1949 (not all combinations necessarily have data for all years). Data are presented for the current month and previous four months. Users can select other time periods that are of interest to them.

Learn the differences between the consumer price index (CPI) and the personal consumption expenditures (PCE) price index. Find out what measures are used to gauge underlying inflation, or the long-term trend in prices, such as median and trimmed-mean inflation rates and core inflation.

Historical (real-time) releases of the measures of core inflation, with data from 1989 (not all combinations necessarily have data for all years). Data are presented for the current release and previous four releases. Users can select other releases that are of interest to them.

The Consumer Price Index (CPI) measures over time the prices of goods and services in major expenditure categories typically purchased by urban consumers. The expenditure categories include food, housing, apparel, transportation, and medical care. Essentially, the Index measures consumer purchasing power by comparing the cost of a fixed set of goods and services (called a market basket) in a specific month relative to the cost of the same market basket in an earlier reference period, designated as the base period. The CPI is calculated for two population groups: urban wage earners and clerical workers (CPI-W) and all urban consumers (CPI-U). The CPI-W population includes those urban families with clerical workers, sales workers, craft workers, operatives, service workers, or laborers in the family unit and is representative of the prices paid by about 40 percent of the United States population. The CPI-U population consists of all urban households (including professional and salaried workers, part-time workers, the self-employed, the unemployed, and retired persons) and is representative of the prices paid by about 80 percent of the United States population. Both populations specifically exclude persons in the military, in institutions, and all persons living outside of urban areas (such as farm families). National indexes for both populations are available for about 350 consumer items and groups of items. In addition, over 100 of the indexes have been adjusted for seasonality. The indexes are monthly with some beginning in 1913. Area indexes are available for 27 urban places. For each area, indexes are presented for about 65 items and groups. The area indexes are produced monthly for 5 areas, bimonthly for 10 areas, and semiannually for 12 urban areas. Regional indexes are available for four regions with about 95 items and groups per region. Beginning with January 1987, regional indexes are monthly, with some beginning as early as 1966. City-size indexes are available for four size classes with about 95 items and groups per class. Beginning with January 1987, these indexes are monthly and most begin in 1977. Regional and city-size indexes are available cross-classified by region and city-size class. For each of the 13 cross-classifications, about 60 items and groups are available. Beginning with January 1987, these indexes are monthly and most begin in 1977. Each index record includes a series identification code that specifies the sample (either all urban consumers or urban wage earners and clerical workers), seasonality (either seasonally adjusted or unadjusted), periodicity (either semiannual or regular), geographic area, index base period, and item number of the index. (Source: downloaded from ICPSR 7/13/10)

Please Note: This dataset is part of the historical CISER Data Archive Collection and is also available at ICPSR at https://doi.org/10.3886/ICPSR08166.v3. We highly recommend using the ICPSR version as they may make this dataset available in multiple data formats in the future and includes additional years of data.

Context:

The Bureau of Labor Statistics defines the Consumer Price Index (CPI) as “a statistical measure of change, over time, of the prices of goods and services in major expenditure groups--such as food, housing, apparel, transportation, and medical care--typically purchased by urban consumers. Essentially, it compares the cost of a sample of goods and services in a specific month relative to the cost of the same "market basket" in an earlier reference period.

Make sure to read the cu.txt for more descriptive summaries on each data file and how to use the unique identifiers.

Content:

This dataset was collected June 27th, 2017 and may not be up-to-date.

The revised CPI introduced by the BLS in 1998 includes indexes for two populations; urban wage earners and clerical workers (CW), and all urban consumers (CU). This dataset covers all urban consumers (CU).

The Consumer Price Index (CPI) is a statistical measure of change, over time, of the prices of goods and services in major expenditure groups--such as food, housing, apparel, transportation, and medical care--typically purchased by urban consumers. Essentially, it compares the cost of a sample "market basket" of goods and services in a specific month relative to the cost of the same "market basket" in an earlier reference period. This reference period is designated as the base period.

As a result of the 1998 revision, both the CW and the CU utilize updated expenditure weights based upon data tabulated from three years (1982, 1983, and 1984) of the Consumer Expenditure Survey and incorporate a number of technical improvements, including an updated and revised item structure.

To construct the two indexes, prices for about 100,000 items and data on about 8,300 housing units are collected in a sample of 91 urban places. Comparison of indexes for individual CMSA's or cities show only the relative change over time in prices between locations. These indexes cannot be used to measure interarea differences in price levels or living costs.

Summary Data Available: U.S. average indexes for both populations are available for about 305 consumer items and groups of items. In addition, over 100 of the indexes have been adjusted for seasonality. The indexes are monthly with some beginning in 1913. Semi-annual indexes have been calculated for about 100 items for comparison with semi-annual areas mentioned below. Semi-annual indexes are available from 1984 forward.

Area indexes for both populations are available for 26 urban places. For each area, indexes are published for about 42 items and groups. The indexes are published monthly for three areas, bimonthly for eleven areas, and semi-annually for 12 urban areas.

Regional indexes for both populations are available for four regions with about 55 items and groups per region. Beginning with January 1987, indexes are monthly, with some beginning as early as 1966. Semi-annual indexes have been calculated for about 42 items for comparison with semi-annual areas mentioned above. Semi-annual indexes have been calculated for about 42 items in the 27 urban places for comparison with semi-annual areas.

City-size indexes for both populations are available for three size classes with about 55 items and groups per class. Beginning with January 1987, indexes are monthly and most begin in 1977. Semi-annual indexes have been calculated for about 42 items for comparison with semi-annual areas mentioned below.

Region/city-size indexes for both populations are available cross classified by region and city-size class. For each of 13 cross calculations, about 42 items and groups are available. Beginning with January 1987, indexes are monthly and most begin in 1977. Semi-annual indexes have been calculated for about 42 items in the 26 urban places for comparison with semi-annual areas.

Frequency of Observations: U.S. city average indexes, some area indexes, and regional indexes, city-size indexes, and region/city-size indexes for both populations are monthly. Other area indexes for both populations are bimonthly or semi-annual.

Annual Averages: Annual averages are available for all unadjusted series in the CW and CU.

Base Periods: Most indexes have a base period of 1982-1984 = 100. Other indexes, mainly those which have been added to the CPI program with the 1998 revision, are based more recently. The base period value is 100.0, except for the "Purchasing Power" values (AAOR and SAOR) where the base period value is 1.000.

Data Characteristics: Indexes are stored to one decimal place, except for the "Purchasing Power" values which are stored to three decimal places.

References: BLS Handbook of Methods, Chapter 17, "Consumer Price Index", BLS Bulletin 2285, April 1988.

Acknowledgements:

This dataset was taken directly from the U.S. Bureau of Labor Statistics web...

HU: CPI: OECD Grouping: All Items: Non-Food Non-Energy data was reported at 117.737 2010=100 in 2021. This records an increase from the previous number of 112.616 2010=100 for 2020. HU: CPI: OECD Grouping: All Items: Non-Food Non-Energy data is updated yearly, averaging 72.683 2010=100 from Dec 1990 (Median) to 2021, with 32 observations. The data reached an all-time high of 117.737 2010=100 in 2021 and a record low of 8.515 2010=100 in 1990. HU: CPI: OECD Grouping: All Items: Non-Food Non-Energy data remains active status in CEIC and is reported by Organisation for Economic Co-operation and Development. The data is categorized under Global Database’s Hungary – Table HU.OECD.MEI: Consumer Price Index: COICOP 1999: OECD Member: Annual. The index measures average changes in the prices of a basket of goods and services bought for consumption purposes by households in Hungary. Types of prices: Prices reflect those that consumers would pay on the day of the survey, including sales taxes. Discounts and rebates that may apply to the specific products purchased are included, the consumer credit charges are excluded. Price collection methods: Most of the collection is done by personal visit to retail outlets using paper-based questionnaires; some major companies with a central pricing policy supply prices directly either via printed form or telephone; some prices are also collected from Internet. Price data of Budapest and the county of Pest are recorded in the Surveys Section, using the BLAISE programme while price data for the other counties and towns are recorded in the competence centre in Debrecen. Treatment of Rentals for housing: Included. Treatment of Owner-Occupied Housing: Included and the computation of imputed rent for owner-occupied housing is based on average price changes of the different repair items. Treatment of missing prices: When a price observation is temporarily unavailable in a given month, its price is imputed based upon the price movement of similar products in the same item category in the same geographical area. In particular, since 1998, missing prices are handled based on the method suggested by EUROSTAT ( 6 of Commission Regulation (EC) No 1749/96) which replaces the price actually surveyed in the previous month - but missing in the reference month - by an estimated (imputed) price, using an index calculated from monthly county prices of the given representative item. The method can be used for two months, following this period of time the price of the product or service that is similar to the earlier one must be collected. Treatment of quality changes: The representative items are revised in every year. Introduction of new products: The list of items is reviewed each December, and when new products have gained sufficient market share they are added to the pricing sample. Treatment of seasonal products: The prices of seasonal items collected for pre-specified months. The HCSO uses the variable weight approach for fresh fruits and vegetables. During the year the weights for these groups are unchanged. However, inside the group the selected items have variable weights that can change month by month.; Index series starts in January 1980

Median Consumer Price Index is a part of the Median CPI indicator of the Federal Reserve Bank of Cleveland.

The Consumer Price Index (CPI) measures quarterly changes in the price of a 'basket' of goods and services which account for a high proportion of expenditure by the CPI population group (i.e. …Show full descriptionThe Consumer Price Index (CPI) measures quarterly changes in the price of a 'basket' of goods and services which account for a high proportion of expenditure by the CPI population group (i.e. metropolitan households).

Consumer price inflation statistics are important indicators of how the UK economy is performing. They are used in many ways by individuals, government, businesses and academics. Inflation statistics impact on everyone in some way as they affect interest rates, tax allowances, benefits, pensions, savings rates, maintenance contracts and many other payments. This article provides information about the users and uses of consumer price inflation statistics, and user experiences of these statistics, including the new CPIH and RPIJ measures. In addition, it also provides information on the characteristics of the different measures of consumer price inflation in relation to their potential use. Source agency: Office for National Statistics Designation: National Statistics Language: English Alternative title: consumer price inflation statistics

Measures of monthly UK inflation data including CPIH, CPI and RPI. These tables complement the consumer price inflation time series dataset.

The Consumer Price Index (CPI) for food is a component of the all-items CPI. The CPI measures the average change over time in the prices paid by urban consumers for a representative market basket of consumer goods and services. While the all-items CPI measures the price changes for all consumer goods and services, including food, the CPI for food measures the changes in the retail prices of food items only.This record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: Web page with links to Excel files For complete information, please visit https://data.gov.

Graph and download economic data for Consumer Price Index for All Urban Consumers: All Items Less Food and Energy in U.S. City Average (CPILFESL) from Jan 1957 to Aug 2025 about core, headline figure, all items, urban, consumer, CPI, inflation, price index, indexes, price, and USA.

Israel IL: Consumer Price Index (CPI): Local Source Base Year: Clothing and Footwear data was reported at 90.467 2020=100 in 2022. This records a decrease from the previous number of 95.092 2020=100 for 2021. Israel IL: Consumer Price Index (CPI): Local Source Base Year: Clothing and Footwear data is updated yearly, averaging 119.871 2020=100 from Dec 1985 (Median) to 2022, with 38 observations. The data reached an all-time high of 167.358 2020=100 in 1997 and a record low of 53.850 2020=100 in 1985. Israel IL: Consumer Price Index (CPI): Local Source Base Year: Clothing and Footwear data remains active status in CEIC and is reported by Organisation for Economic Co-operation and Development. The data is categorized under Global Database’s Israel – Table IL.OECD.MEI: Consumer Price Index: COICOP 1999: OECD Member: Annual. The CPI measures the change in prices which consumer pay for fixed market basket of consumption goods and services. Price coverage: Prices include applicable taxes (VAT) and fees on the products at the time of sale. Cash payments are the basis for the price survey. Monthly installment payment and credit card interest are excluded. Price collection procedure: The data collection methods are adapted according to the specific characteristics of the CPI classes. The main price surveys are: Computer Assisted Telephone Interviews (CATI), conducted by the CBS staff at the central office; Computer Assisted Personal Interviews (CAPI) by field collectors with handheld personal computers (HPC) and Direct Data Entry (DDE) into the database. Also for some special items Internet is used either in parallel with CAPI or as a part of DDE collection. The CPI includes a measure of rented housing Owner Occupied Housing (OOH) is included in the CPI and is calculated using rental equivalent method. The method for imputation of OOH is based on stratified average prices of contracts that are subject to renewal. In order to reduce variance in the monthly series, two month moving averages are compared each month. However, the method for OOH still leaves room for quality differences to play role in month-to-month average price changes. The method relies on successful stratification of apartments to groups whose relative price changes are as similar as possible. While the stratification is based on apartment location and number of rooms, some quality characteristics may experience month-to-month variation. Treatment of own account production is not included Goods and services sold illegally, second hand goods, goods and services partially or totally subsidized by the government and financial transactions are not included. Insurance: Insurance of personal transport and Health insurance (private and provided by the Government) are included. Treatment of missing items: Price changes for missing observations are imputed based on the price movements of other observations of the same item. Selection of replacement items: Products that become permantely unavailable are replaced in the sample and enumerators select a replacement possessing as many of the same quality characteristics as possible. Prices from previous period are sought for the replacement item for linking purpose. Treatment of quality change: There are two types of replacement approach: comparable and non-comparable. If a new product possesses the previously defined important characteristics of the old product, the new product is defined as comparable and a minor quality change is regarded as price change. Otherwise, if a significant quality change is introduced, the new product is defined as not comparable. The breakage in price series is treated by the linking method. Explicit quality adjustments are usually not performed. Hedonic methods are being considered but not yet implemented. In some cases, where the product cycle is short and new versions with improved quality characteristics are frequently introduced, the overlap method may give biased estimates. Introduction of new products: New items are introduced when the market basket is updated. New products are introduced into the sample as they gain significant market share. Business and professional periodicles are closely followed to gain information on new products that are gaining consumer demand. Seasonal items: Missing prices for seasonal products are imputed. Certain procedures are in place to avoid too early reintroduction of seasonal products back to the index. For price changes a bridge method is used when the items are reintroduced to the collection. Index series are also calculated and released in seasonally adjusted form.; Index series starts in November 1985

Greece GR: Consumer Price Index (CPI): Local Source Base Year: Recreation and Culture data was reported at 104.165 2020=100 in 2023. This records an increase from the previous number of 100.913 2020=100 for 2022. Greece GR: Consumer Price Index (CPI): Local Source Base Year: Recreation and Culture data is updated yearly, averaging 105.532 2020=100 from Dec 1999 (Median) to 2023, with 25 observations. The data reached an all-time high of 116.695 2020=100 in 2010 and a record low of 92.379 2020=100 in 1999. Greece GR: Consumer Price Index (CPI): Local Source Base Year: Recreation and Culture data remains active status in CEIC and is reported by Organisation for Economic Co-operation and Development. The data is categorized under Global Database’s Greece – Table GR.OECD.MEI: Consumer Price Index: COICOP 1999: OECD Member: Annual. The index measures changes in the general level of the prices of goods and services purchased by the average household. Types of prices: The collected prices correspond with the prices actually paid by the consumer and refer to sales 'in cash', including all the taxes (included VAT). Special offers and discounts are not taken into account. Instead, the reduced prices of general offers and general discounts are collected. Price collection methods: Prices are collected by specialised NSSG staff who visits the outlets within a defined period of the month or on the fixed day of the week and register the prices into special price collection prints. The rent prices are collected directly from households. Treatment of Rentals for Housing: included. Treatment of Owner-Occupied Housing: excluded. Treatment of missing prices: The treatment of missing prices depends on the category of items, for which prices are collected. For seasonal items (fresh vegetables, fresh fruit, clothing and footwear items, etc.) is followed the anticipated method. The treatment of missing prices for the other items depends on the duration of absence of the item in the outlet. If the time interval of its absence exceeds 2 months, then the item is replaced. Selection of replacements items: When a specified item is no longer available in the market or has ceased to be important, as regards the consumption, because of the appearance of new varieties, then it is substituted by the item which has taken its place in the market. If the substitute item is comparable to the item it replaces, then it is tried to estimate whether the deviation of prices is due to differences in quality, weight, package, etc. and adjust the price accordingly, so that the adjusted price corresponds to the price of the new item, with quality level equivalent to that of the old item. However, if the substitute item is not comparable to the one it replaces, then the prices of the two items are linked, and a theoretical base price is calculated for the substitute item. Treatment of quality changes: NSSG uses implicit quality adjustment techniques (such as overlap, etc.), each time taking into account different parameters in the quality adjustment decision. Explicit methods are only used in the form of quantity judgment, expert judgment, etc. in certain cases. The demand for explicit quality adjustment techniques, such as option cost, hedonics, etc. should be explored in the long run in the scope of NSSG. Seasonal items: For dealing with the seasonality of fresh vegetables and fruit the method of monthly changing weights of the various species of these goods, by keeping the weights of sub-groups 'Fresh vegetables' and 'Fresh fruit' constant, is applied. For the other items which are not offered, exactly the same, throughout the year (such as clothing and footwear items, heating oil, cinema and theatre tickets, sport equipment, etc.), their last observed regular price is repeated for the months in which these items are not available in the market.; Index series starts in January 1999

The Harmonised Index of Consumer Prices (HICP) gives comparable measures of inflation for the countries and country groups for which it is produced. It is an economic indicator that measures the change over time of the prices of consumer goods and services acquired by households. In other words, it is a set of consumer price indices (CPIs) calculated according to a harmonised approach and a set of definitions as laid down in Regulations and Recommendations.

In addition, the HICP provides the official measure of consumer price inflation in the euro area for the purposes of monetary policy and the assessment of inflation convergence as required under the Maastricht criteria for accession to the euro.

The HICP is available for all EU Member States, Iceland, Norway and Switzerland. In addition to the individual country series there are three country groups: the euro area (EA), the European Union (EU), and the European Economic Area (EEA), the latter covering Iceland and Norway, in addition to the EU. Liechtenstein does not produce HICP and is therefore not included in the EEA HICP aggregate.

The official indices for the country-groups reflect the changing country composition of the EA, the EU and the EEA. The HICP for new Member States is chained into the aggregate indices at the time of accession. For analytical purposes Eurostat also computes country-group indices with stable country composition over time.

HICP for Albania, Montenegro, North Macedonia, Serbia, Türkiye (candidate countries), as well as Kosovo (^*) are also published. Their data is flagged with 'd' ('definition differs'), given that its conformity with the methodological HICP requirements has not been evaluated by Eurostat.

A proxy-HICP for the all-items index and main headings is also available for the USA.

National HICPs are produced by National Statistical Institutes (NSIs), while country-group indices (EU, EA and EEA) are produced by Eurostat.

The data are released monthly in Eurostat's database and include price indices and rates of change (monthly, annual and 12-month moving average changes). In addition to the headline 'all-items HICP', over 400 sub-indices for different goods and services and over 30 special aggregates are available, including the HICP at administered prices (HICP-AP).

Every year, with the release of the January data, the relative weights for the indices and the special aggregates (item weights) as well as the individual countries' weight within the country groups (country weights) are published.

The composition of the HICP for administered prices (HICP-AP), i.e. which sub-indices are classified as mainly or fully administered by each Member State, is updated at the same time (more information on HICP-AP can be found under the Specific topics on the web page: Information on data - Harmonised Indices of Consumer Prices (HICP) - Eurostat (europa.eu) (#HICP - administered prices).

Eurostat publishes early estimates, called 'flash estimate', of the euro area overall inflation rate and selected components. These are published monthly, usually on the last working day of the reference month.

The HICP at constant tax rates (HICP-CT) is also published every month and follows the same computation principles as the HICP, but is based on prices at constant tax rates. The comparison with the standard HICP can show the potential impact of changes in indirect taxes, such as value-added tax (VAT) and excise duties, on the overall inflation (more information can be found in the 'HICP-CT Reference methodology document').

Flags

Flags used in the Eurostat online database provide information about the status of the data or a specific data value. The list of used flags can be found in the web page Database - Eurostat (europa.eu), above the tree, through the 'i' box 'information on the database' and then 'Flags and special values' topic.

(*) Under United Nations Security Council Resolution 1244/99.

The Consumer price index (CPI) all households, calculated by Statistics Netherlands, measures the average price changes of goods and services purchased by households. The index is an important criterion for inflation, frequently used by trade and industry, employers' organisations, trade unions and government. The index is for instance, used to make adjustments to wages, tax tablesand index-linked rent increases, annuities, etc.

Data available from: January 1996 till December 2015

Status of the figures: The figures in this table are final.

Changes as of 18 May 2016: None, this table is stopped.

Changes from 7 January 2016: New figures added.

Changes from 10 December 2015: On 1 October 2015, the points system for the pricing of rental homes was adjusted by the Dutch national government. As a direct consequence, rental prices of a limited number of dwellings were reduced, which had a downward effect on the average rental price. The effect of this decrease on the rental price indices and imputed rent value could not be determined in time because housing associations announced the impact of rent adjustments only in November. For this reason, the figures of the groups 04100 ‘Actual rentals for housing’ and 04200 ‘Imputed rent value’ over October 2015 have now been adjusted.

The figures of the groups 061100 ‘Pharmaceutical products’, 061200 ‘Other medical products, equipment’, 072200 ‘Fuels and lubricants’ and 083000 ‘Telephone and internet services’ over the months June through September 2015 have been corrected. This has no impact on the headline indices.

The derived CPI decreased by 0.01 index point over August 2015.

When will new figures be published? Not applicable. This table is succeeded by Consumer prices; price index 2015=100. See paragraph 3.

Greece GR: Consumer Price Index (CPI): Local Source Base Year: All Items data was reported at 114.833 2020=100 in 2023. This records an increase from the previous number of 110.987 2020=100 for 2022. Greece GR: Consumer Price Index (CPI): Local Source Base Year: All Items data is updated yearly, averaging 24.581 2020=100 from Dec 1955 (Median) to 2023, with 69 observations. The data reached an all-time high of 114.833 2020=100 in 2023 and a record low of 0.995 2020=100 in 1955. Greece GR: Consumer Price Index (CPI): Local Source Base Year: All Items data remains active status in CEIC and is reported by Organisation for Economic Co-operation and Development. The data is categorized under Global Database’s Greece – Table GR.OECD.MEI: Consumer Price Index: COICOP 1999: OECD Member: Annual. The index measures changes in the general level of the prices of goods and services purchased by the average household. Types of prices: The collected prices correspond with the prices actually paid by the consumer and refer to sales 'in cash', including all the taxes (included VAT). Special offers and discounts are not taken into account. Instead, the reduced prices of general offers and general discounts are collected. Price collection methods: Prices are collected by specialised NSSG staff who visits the outlets within a defined period of the month or on the fixed day of the week and register the prices into special price collection prints. The rent prices are collected directly from households. Treatment of Rentals for Housing: included. Treatment of Owner-Occupied Housing: excluded. Treatment of missing prices: The treatment of missing prices depends on the category of items, for which prices are collected. For seasonal items (fresh vegetables, fresh fruit, clothing and footwear items, etc.) is followed the anticipated method. The treatment of missing prices for the other items depends on the duration of absence of the item in the outlet. If the time interval of its absence exceeds 2 months, then the item is replaced. Selection of replacements items: When a specified item is no longer available in the market or has ceased to be important, as regards the consumption, because of the appearance of new varieties, then it is substituted by the item which has taken its place in the market. If the substitute item is comparable to the item it replaces, then it is tried to estimate whether the deviation of prices is due to differences in quality, weight, package, etc. and adjust the price accordingly, so that the adjusted price corresponds to the price of the new item, with quality level equivalent to that of the old item. However, if the substitute item is not comparable to the one it replaces, then the prices of the two items are linked, and a theoretical base price is calculated for the substitute item. Treatment of quality changes: NSSG uses implicit quality adjustment techniques (such as overlap, etc.), each time taking into account different parameters in the quality adjustment decision. Explicit methods are only used in the form of quantity judgment, expert judgment, etc. in certain cases. The demand for explicit quality adjustment techniques, such as option cost, hedonics, etc. should be explored in the long run in the scope of NSSG. Seasonal items: For dealing with the seasonality of fresh vegetables and fruit the method of monthly changing weights of the various species of these goods, by keeping the weights of sub-groups 'Fresh vegetables' and 'Fresh fruit' constant, is applied. For the other items which are not offered, exactly the same, throughout the year (such as clothing and footwear items, heating oil, cinema and theatre tickets, sport equipment, etc.), their last observed regular price is repeated for the months in which these items are not available in the market.; Index series starts in January 1955