|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | | | | | | | $2,533 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $194,360 | $516,821 | $306,467 | $19,784 | $193,792 | $2,692 | $11,855 |
| Total | $194,360 | $516,821 | $306,467 | $19,784 | $193,792 | $2,692 | $14,388 |
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