|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $687,118 | $585,647 | $190,688 | $120 | | | |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $612,244 | $13,750 | $446,264 | $447,647 | $47,380 | $570,008 | $496,266 |
| Total | $1,299,362 | $599,397 | $636,952 | $447,767 | $47,380 | $570,008 | $496,266 |
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