This dataset contains statistics on Consumer Price Indices (CPIs) including national CPIs on all items, food, energy, services and housing, by COICOP classification, Harmonised Indices of Consumer Prices (HICPs) and their associated weights and contributions to national annual inflation, replacing these 4 constiutent datasets. Consumer price indices measure inflation, or the changes in average retail prices of a fixed basket of goods and services representing household consumption. Data are expressed as percentage change or index (2010 = 100) and are available from 1915 onwards and are available monthly for all the countries except for Australia and New Zealand (quarterly data).