Source: U.S. Bureau of Economic Analysis
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Frequency: Annual

This is the government's measure of the contribution of net exports (exports minus imports) in national GDP in a given year, unadjusted for inflation. Some economists like to add imports to exports, as well.

U.S. Bureau of Economic Analysis, Net exports of goods and services [A019RC1A027NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/A019RC1A027NBEA.