|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $682 | $43,318 | $2,230 | $17,428 | | $38,932 | $23,000 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $3,141,861 | $2,277,502 | $2,130,274 | $1,232,717 | $1,642,438 | $775,692 | $254,000 |
| Total | $3,142,543 | $2,320,820 | $2,132,504 | $1,250,145 | $1,642,438 | $814,624 | $277,000 |
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