Figure 4ZManufacturing imports as a share of U.S. GDP, 1973–2011Source: Authors' analysis of USITC trade data and BEA 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: « Education needed in 2022 workforce and education levels of the 2012 workforce Next chart: Relative productivity of U.S. trading partners, 1973–2011 »