|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $2,030,653 | $2,192,186 | $2,169,962 | $2,588,922 | $3,000,763 | $3,336,224 | $3,031,916 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $4,872,573 | $8,294,149 | $35,988,984 | $65,405,279 | $27,982,597 | $43,905,083 | $25,662,062 |
| Total | $6,903,226 | $10,486,335 | $38,158,946 | $67,994,201 | $30,983,360 | $47,241,307 | $28,693,978 |
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