|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $1,338,120 | $1,893,111 | $2,931,602 | $3,540,175 | $3,486,086 | $6,668,883 | $11,454,255 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $1,501,686 | $233,656 | $190,831 | $1,123,417 | $4,079,830 | $5,705,009 | $10,290,291 |
| Total | $2,839,806 | $2,126,767 | $3,122,433 | $4,663,592 | $7,565,916 | $12,373,892 | $21,744,546 |
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