: GDP Exports Imports Exports Imports Yea (Billions of dollars) (Billions of dollars) (Billions of dollars) (Billions of dollars) (Percentage of GDP) 2002 2003 2004 2005 2006 125.0 130.3 141.7 151.7 160.3 43.7 42.3 40.7 43.5 43.9 40.8 40.1 40.3 44.5 47.5 Source: Income, Expenditures, Poverty, & Wealth: Gross Domestic Produt (GDP). United States Census Bureau, United States Department of Commercs, lst modified April 2011, accessed June 10, 2013, http://www.census.gav/compendis/statab/cats/income_xpenditures_poverty_wealth gross domestiz_product _gdp.html.