Three types of Consumer Price Index Numbers maintained by Labour Bureau Calculation of CPI The Labour Bureau has been compiling and maintaining three different series of Consumer Price Index numbers viz. (i) Consumer Price Index Numbers for Industrial Workers (CPI-IW) on base 2001=100, (ii) Consumer Price Index Numbers for Agricultural Labourer on base 1986-87=100, … [Read more...] about Three types of Consumer Price Index Numbers maintained by Labour Bureau