|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $824,444 | $10,743 | $82,124 | $201,476 | $425,895 | $108,809 | $162,271 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $5,307,634 | $13,607,069 | $23,413,791 | $30,339,956 | $23,372,712 | $24,823,644 | $19,004,643 |
| Total | $6,132,078 | $13,617,812 | $23,495,915 | $30,541,432 | $23,798,607 | $24,932,453 | $19,166,914 |
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