“The International Macroeconomic Data Set provides data from 1969 through 2017 for real (adjusted for inflation) gross domestic product (GDP), population, real exchange rates, and other variables for the 190 countries and 34 regions that are most important for U.S. agricultural trade. The data presented here are a key component of the USDA Baseline projections process, and can be used as a benchmark for analyzing the impacts of U.S. and global macroeconomic shocks. The data for the Baseline projections are updated once a year in December to reflect the assumptions used for the Baseline. The historical data will be revised semiannually as the underlying data evolve.