## LATEST RELEASE

**SPECIAL RELEASE:**

Consumer Price Index of the National Capital Region, January to April 2019 (Base Year: 2012)

Consumer Price Index of the National Capital Region, October to December 2018 (Base Year: 2012)

Consumer Price Index of the National Capital Region, July to September 2018 (Base Year: 2012)

Consumer Price Index of the National Capital Region, April to June 2018 (Base Year: 2012)

Consumer Price Index of the National Capital Region, January to March 2018 (Base Year: 2012)

Consumer Price Index of the National Capital Region, October to December 2017 (Base Year: 2006)

Consumer Price Index of the National Capital Region, January to March 2014 (Base Year: 2006)

Consumer Price Index of the National Capital Region, 1st Semester 2013 (Base Year: 2006)

Consumer Price Index of the National Capital Region, 2nd Semester 2013 (Base Year: 2006)

Consumer Price Index of the National Capital Region, 1st Semester 2012 (Base Year: 2006)

Consumer Price Index of the National Capital Region, 2nd Semester 2012 (Base Year: 2006)

**FACTSHEET:**

**2019**

Consumer Price Index (September 2019)

Consumer Price Index (August 2019)

Consumer Price Index (July 2019)

Consumer Price Index (June 2019)

Consumer Price Index (May 2019)

Consumer Price Index (April 2019)

Consumer Price Index (March 2019)

Consumer Price Index (February 2019)

Consumer Price Index (January 2019)

**2018**

Consumer Price Index (December 2018)

Consumer Price Index (November 2018)

Consumer Price Index (October 2018)

Consumer Price Index (September 2018)

Consumer Price Index (August 2018)

Consumer Price Index (July 2018)

Consumer Price Index (June 2018)

Consumer Price Index (May 2018)

Consumer Price Index (April 2018)

Consumer Price Index (March 2018)

Consumer Price Index (February 2018)

Consumer Price Index (January 2018)

## Definition

The CPI is an indicator of the change in the average retail prices of a fixed basket of goods and services commonly purchased by households relative to a base year.

## Computation of the CPI

The formula used in computing the CPI is the weighted arithmetic mean of price relatives, a variant of the Laspeyres formula with fixed base year period weights. In computing the CPI, the formula is:

## ECONOMIC INDICATORS DERIVED FROM THE CPI

**1. Inflation Rate- **is defined as the annual rate of change or the year-on-year change in the CPI.

**2. Purchasing Power of the Peso**

Another important economic indicator derived from the CPI is the PPP. The PPP is a measure of the real value of the peso in a given period relative to a chosen reference period. It is computed by getting the reciprocal of the CPI and multiplying the result by 100.

## INDEX FORMULA

The construction of the CPI basically uses a Laspeyres Formula (fixed base year weights). The formula is modified as the weighted arithmetic mean of price relatives.