|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Worked slate & arts. of slate/agglom. slate | $207,965,296 | $210,272,864 | $251,286,033 | $276,831,953 | $208,607,131 | $206,058,575 | $204,522,865 |
| Total | $207,965,296 | $210,272,864 | $251,286,033 | $276,831,953 | $208,607,131 | $206,058,575 | $204,522,865 |
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