|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | | | | | | $180 | $18,893 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $5,648,387 | $6,055,379 | $1,364,221 | $67,090 | $343,112 | $187,225 | $9,736 |
| Total | $5,648,387 | $6,055,379 | $1,364,221 | $67,090 | $343,112 | $187,405 | $28,629 |
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