|
| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | | | $1,589 | | | |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $2,470,020 | $2,156,915 | $5,249,600 | $1,625,008 | $1,535,422 | $940,186 |
| Total | $2,470,020 | $2,156,915 | $5,251,189 | $1,625,008 | $1,535,422 | $940,186 |
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