CONSUMER PRICE INDEX (CPI) AND INFLATION RATE (IR)
Agency Responsible Frequency Disaggregation Availability Dissemination Other Information National Statistics Office (NSO) Monthly Geographic Area: National/Regional/Provincial Commodity Group: Major/Minor National/Regional from 1972; with Base Year 1994 National: Five (5) days after reference month Regional/Provincial: 5 - 7 days after reference month Data derived from survey of retail prices of goods and services by NSO and Bureau of Agricultural Statistics (BAS); indices derived using Laspeyre’s method. Data available from 1957 to 1965; base year is 1957. 1965 - 1972; base year is 1965 1973 - 1978; base year is 1972 1979 - 1988; base year is 1978 1989 - 1994; base year is 1988 1995 - 2000; base year is 1994 2001 to present; base year is 2000 Definition of Terms Base Period Base Price Consumer Price Consumer Price Index period of time chosen as reference on which index number was computed. price of a unit of a commodity at some period of time chosen as reference, on which index number was computed. price at which a specified group of consumers buy a commodity for consumption. statistical measure of the average changes in prices of a “fixed basket” of goods and services, usually purchased on small quantities for consumption by an average household. Also known by its acronym CPI. growth rate in the Consumer Price Index (CPI). Inflation Rate = CPI (Current Year) --------------------------- - 1 x 100 CPI (Previous Year)
Inflation Rate