The EPA's Greenhouse Gas Reporting Program collects annual greenhouse gas emissions data from over 8,000 facilities in the top emitting sectors of the US economy. In 2012, total US greenhouse gas emissions reported to the program were 6,526 million metric tons of carbon dioxide equivalents. The primary sources of greenhouse gas emissions in the US are electricity production (32%), transportation (28%), industry (20%), commercial and residential (10%), and agriculture (10%). Greenhouse gas emissions in 2012 were 10% below 2005 levels.