| 年份 | 类型 | 数值(千吨) |
| 2001 | United States : all sectors | 3,871.00 |
| 2002 | United States : all sectors | 6,836.00 |
| 2003 | United States : all sectors | 6,303.00 |
| 2004 | United States : all sectors | 7,677.00 |
| 2005 | United States : all sectors | 8,330.00 |
| 2006 | United States : all sectors | 7,363.00 |
| 2007 | United States : all sectors | 6,036.00 |
| 2008 | United States : all sectors | 5,417.00 |
| 2009 | United States : all sectors | 4,821.00 |
| 2010 | United States : all sectors | 4,994.00 |
| 2011 | United States : all sectors | 5,012.00 |
| 2012 | United States : all sectors | 3,675.00 |
| 2013 | United States : all sectors | 4,852.00 |
| 2014 | United States : all sectors | 4,412.00 |
| 2015 | United States : all sectors | 4,044.00 |
| 2016 | United States : all sectors | 4,253.00 |
| 2017 | United States : all sectors | 3,349.00 |