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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Bituminous/oil shale & tar sands | $266,355 | $711,717 | $513,902 | $1,719,459 | $21,093,691 | $12,356,937 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $1,459,842 | $5,431,880 | $12,816,205 | $17,623,211 | $15,224,332 | $17,242,047 |
| Total | $1,726,197 | $6,143,597 | $13,330,107 | $19,342,670 | $36,318,023 | $29,598,984 |
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