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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bituminous/oil shale & tar sands | $13,318,584 | $15,467,173 | $17,121,665 | $14,857,481 | $13,153,886 | $11,877,132 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $801,300 | $633,162 | $1,296,749 | $2,002,598 | $3,104,585 | $847,351 |
| Total | $14,119,884 | $16,100,335 | $18,418,414 | $16,860,079 | $16,258,471 | $12,724,483 |
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