(Figure: Imports and Experts} From 1930 to 2013, U.S. imports as a share of GDP have ._ and U.S. experts as a share of GDP have Share of GDP 20% Imports (15%) 10% Exports (1 2%) 0% 1930 1960 1990 2017 Data from: Bureau of Economic An alysis 0 increased; decreased O decreased; increased 0 increased; increased 0 decreased; decreased