|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bituminous/oil shale & tar sands | | $8,868 | | | | $2,090,001 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $3,128,259 | $2,968,903 | $30,755 | $1,950,418 | $2,679,406 | $34,757 |
| Total | $3,128,259 | $2,977,771 | $30,755 | $1,950,418 | $2,679,406 | $2,124,758 |
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