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The Bulgarian CPI And The Index Of A Small Basket Of Goods And Services

National Statistical Institute Bulgaria. The Bulgarian CPI And The Index Of A Small Basket Of Goods And Services. Joint UNECE/ILO Meeting on Consumer Price Indices Geneva, 10-12 May 2006. Outline. Introduction Main purposes and uses of the CPI and ISB Methodologies and main features

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The Bulgarian CPI And The Index Of A Small Basket Of Goods And Services

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  1. National Statistical Institute Bulgaria The Bulgarian CPI And The Index Of A Small Basket Of Goods And Services Joint UNECE/ILO Meeting on Consumer Price Indices Geneva, 10-12 May 2006

  2. Outline • Introduction • Main purposes and uses of the CPI and ISB • Methodologies and main features • Comparison of CPI and ISB data • Conclusion

  3. Introduction • The Bulgarian Consumer Price Index (CPI) - calculated from May 1990 • Harmonized Index of Consumer Prices (HICP) - work started in 1997 • Index of a Small Basket of goods and services (ISB) - calculated from 2001

  4. Main purposes and uses of the CPI and ISB (1) The overall CPI measures the general relative change in the prices of goods and services used by households for private consumption. It is applied in three main areas as: Macroeconomic indicator - as the official measure of inflation in Bulgaria; Deflator of the values of indicators which do not have their own price measure; Tool for possible indexation of salaries, pensions and other incomes from the Government when needed.

  5. Main purposes and uses of the CPI and ISB (2) The ISB provides information about the price changes of 100 goods and services that comprise the so-called “small basket”. They are considered to be vital for the people with very low incomes. The ISB is constructed as a price index for the lowest-income households in Bulgaria. It can be used: To increase the possibilities for making more extensive and qualitative analysis of the developing socio-economical processes in the country;

  6. Main purposes and uses of the CPI and ISB (2) To assist the regularly conducted negotiations of social partners by providing more detailed information; To provide information on which to base eventual amendments of the social transfers; To broaden the analysis of officially measured inflation in the country; To serve as a basis for creating more elaborate methodology and for constructing price indices that measure price changes of goods and services, for example between regions, as well as certain indicators referring to the population (for example the part of the population considered to be living in poverty).

  7. Methodologies and main features The Bulgarian CPI is an annually chained Laspeyres index. During a calendar year it measures the price changes of a fixed basket of goods and services, taking the previous year as index, price and weight reference period. At the beginning of every year the index is up-dated. • Weights are replaced with new ones of the previous year; • Base prices refer to the average prices of the previous year; • Consumer basket; • Sample of outlets; • Target number of prices.

  8. Methodologies and main features CPI and ISB: • have same geographic coverage and sample of outlets • use the COICOP/HICP classification • have identical calculation procedures • collected prices that are used for the calculation of CPI are used for calculating the ISB as well But they differ in the composition of: • baskets • expenditure weights.

  9. Methodologies and main features: Baskets The consumer basket used for CPI includes goods and services that represent the final monetary consumption of households. General principles observed: • Fixed set of goods and services during calendar year (reflects the average price change for all goods and services and corresponds to HHs consumption stricture); • Correspondence with the definitions in the System of National Accounts in respect of private consumption and its coverage; • Consistency with the classification of goods and services used in international comparisons program; • Include public utilities with “tariff” prices; • Exclude goods traded between households, and goods bought in insignificant quantities.

  10. Methodologies and main features: Baskets ISB is built up on the premise that the composition of the basket allows the maintenance of a low but satisfactory level of living standard. Two major criteria are observed: • monetary expenditures that are represented by the selected goods and services should have the highest share in the budget of the lowest income households in Bulgaria, and • to include goods and services without which normal physical and social existence would not be possible. The “small basket” includes all basic foods. There should be no restrictions regarding nutrition as the viability of the nation depends on it.

  11. Methodologies and main features: Baskets “Alcohol and tobacco” (COICOP2), “Education” (COICOP10) and “Hotels and restaurants” (COICOP11) are excluded from the “small basket”.

  12. Methodologies and main features: Weights CPI expenditure weights • Derived from the Households Budget Survey (HBS) • Additional information sources are used as well • Correspond, to a great extent, to the concept of final monetary consumption expenditures of households; considered to be representative for the population of the country. ISB expenditure weights • Derived from the HBS • Refer to the expenditures of the lowest income HHs in Bulgaria = the population of the lowest 20% from the income distribution and these people are considered to be living in poverty.

  13. Comparison of CPI and ISB data • The total expenditures of the lowest income households (used as weights in the ISB calculation) expressed as part from the total expenditure weights of the CPI, do not vary too much – they are between 8.0% and 8.6%. • Food expenditures have the biggest share in consumer expenditures but while in the CPI they account for 36.8%, they are nearly 60% from the total expenditures in the ISB. • The relative structures of weights of both indices change in similar directions. • Since 2000 the share of food expenditures decreases in both indices but more slowly in the ISB.

  14. Comparison of CPI and ISB data

  15. Comparison of CPI and ISB data

  16. Conclusion • The ISB is designed to be used as an auxiliary tool in economic and social analyses and in defining the social policy; • It measures the price changes of the goods and services consumed by the lowest income households; • The ISB is more “sensitive” index than the CPI; • The ISB has certain limitations and ideally, a separate survey should be carried out.

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