|
| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bituminous/oil shale & tar sands | $5,327 | $5,928,761 | $3,320,858 | $483,712 | |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $1,223,679 | $16,368,312 | $9,919,554 | $4,142,018 | $22,612,158 |
| Total | $1,229,006 | $22,297,073 | $13,240,412 | $4,625,730 | $22,612,158 |
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