|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $8,214 | | $3,570 | $23,277 | $341,708 | $646,657 | $2,512,032 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $3,207 | $37,334 | $16,537,195 | $28,368,927 | $23,607,889 | $30,493,408 | $3,455,358 |
| Total | $11,421 | $37,334 | $16,540,765 | $28,392,204 | $23,949,597 | $31,140,065 | $5,967,390 |
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