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U.S. Trends in Greenhouse Gas Emissions

This figure shows the trends in US carbon dioxide emissions between 1990 and 2009. Emissions increased by 7 percent between 1990 and 2009.  Emissions have declined since 2007 mostly due to the global recession. (Friedlingstein, 2010)


 
Source: Inventory of U.S. Greenhouse Gas Emissions and Sinks 1990-2009 (EPA 2011)