The numbers 0 and 0.0 mean zero or less than half the unit shown. Billion is 1,000 million. Trillion is 1,000 billion. Figures in italics indicate data that are for years or periods other than those specified. Data for years that are more than three years from the range shown are footnoted.
Dollars are current U.S. dollars unless otherwise noted.
Note that classification by income does not necessarily reflect development status. Because GNP per capita changes over time, the country composition of income groups may change from one World Development Indicators to the next. Click here for a full list of economies in each class. Footnotes Known deviations from standard definitions or breaks in comparability over time or across countries are either footnoted in the tables or noted in About the data . When available data are deemed to be too weak to provide reliable measures of levels and trends or do not adequately adhere to international standards, the data are not shown.