Million metric tons of carbon
Notes: One ton of carbon equals 3.667 tons of carbon dioxide gas. Electric utility emissions are distributed across sectors. 1990 and 1992-2001 data are revised from previous editions. 2002 data are preliminary.
Sources: 1980-1989U.S. Department of Energy (USDOE), Energy Information Administration (EIA), Appendix E, available at http://www.eia.doe.gov/oiaf/1605/gg02rpt/appendixes.html. 1990-2002USDOE, EIA, U.S. Carbon Dioxide from Energy Sources 2001 Flash Estimate, available at http://www.eia.doe.gov/oiaf/1605/flash/flash.html, as of September 2003.