| 年份 | 分类 | 数值 |
| 2007 | United States : coal thousand tons | 1,069,709.00 |
| 2008 | United States : coal thousand tons | 981,476.80 |
| 2009 | United States : coal thousand tons | 979,917.90 |
| 2010 | United States : coal thousand tons | 956,537.80 |
| 2011 | United States : coal thousand tons | 841,183.30 |
| 2012 | United States : coal thousand tons | 823,222.40 |
| 2013 | United States : coal thousand tons | 854,559.60 |
| 2014 | United States : coal thousand tons | 782,929.20 |