The International Comparison Program (ICP) is a worldwide statistical initiative led by the World Bank under the auspices of the United Nations Statistical Commission.
It produces comparable price and volume measures of gross domestic product (GDP) and its expenditure aggregates across economies.
Through a partnership with international, regional, sub-regional and national agencies, the ICP collects price data and GDP expenditures to estimate purchasing power parities (PPPs) for the world's e.
World Bank Publications Purchasing power parities and the size of world economies: results from the 2017 international comparison program/***
