Template:Inflation/doc/cpi

This sub-template returns the associated country's CPI for a specific year. It is used by undefined for calculating the inflation rate between two given years, which in turn is used by Inflation to calculate inflated values. It usually isn't meant to be called directly. The information in this dataset is manually input from Inflation and Deflation in Early America, 1634-1860: Patterns of Change in the British American Economy from 1634 to 1699, ''[https://www.americanantiquarian.org/proceedings/44517778.pdf How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States]'' from 1700-1799, and Consumer Price Index (estimate) 1800–, Federal Reserve Bank of Minneapolis.

Usage
Providing no parameter or providing an invalid parameter will result in the "default" CPI, what usually means the latest one.