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Documentation

Gross domestic product (GDP) is presented in real 2005 dollars, while exchange rates are expressed in foreign currency per U.S. dollar.

Data Sources and Derivations

The GDP series starts with the 2005 U.S. dollar GDP series derived from the latest edition of the World Bank's World Development Indicatorsand is filled in using other data sources such as Oxford Economic Forecasting, Global Insight, Project Link, and the International Monetary Fund's International Financial Statistics. Conversion to dollars is based on a fixed 2005 exchange rate. The population series is from the Census Bureau International Population Database. The historical exchange rate series is taken from the ERS Agricultural Exchange Rate Data Set. GDP shares are derived by dividing individual country/region GDP by world GDP. Dividing GDP by population yields per capita income. The GDP deflators and consumer price indexes start with the World BankWorld Development Indicators and are supplemented with other data sources as with GDP. Further gaps in all of the data series are filled in by a process of interpolation, extrapolation, or back estimation.

Data Updates

The data are annual series with historical data from 1969-2008 and projections for 2009-20. Updates for the Baseline are done once a year in December. The historical data are revised semi-annually to reflect revisions as they become available.

For those who want the macroeconomic projections for the final Baseline for any recent year or for more detailed data on the countries in the regional aggregations, contact Mathew Shane directly (mshane@ers.usda.gov, 202-694-5282).

Last updated: Wednesday, October 24, 2012

For more information contact: Mathew Shane

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