Figure 4YImports, exports, and trade balance in goods as a share of U.S. GDP, 1947–2011Source: Authors' analysis of Bureau of Economic Analysis National Income and Product Accounts Share on Facebook Tweet this chart EmbedCopy the code below to embed this chart on your website. Download image Previous chart: « SWA2014-Wages | Figure 4X | Employer health care costs as a share of annual wages, by wage fifth, 1996–2008 Next chart: Effective tax rates for selected federal taxes, by income group, 1979–2007 »