|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $921,000 | $926,000 | $739,000 | $53,000 | $29,000 | $176,206 | $345,871 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $3,617,000 | $2,701,000 | $5,247,000 | $3,525,000 | $1,059,000 | $527,294 | $1,497,961 |
| Total | $4,538,000 | $3,627,000 | $5,986,000 | $3,578,000 | $1,088,000 | $703,500 | $1,843,832 |
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