|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $9,067,990 | $34,866,377 | $21,065,149 | $10,548,465 | $16,399,365 | $16,524,721 | $12,218,890 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $31,451,658 | $63,968,726 | $70,007,036 | $66,640,086 | $43,325,389 | $73,171,689 | $87,280,316 |
| Total | $40,519,648 | $98,835,103 | $91,072,185 | $77,188,551 | $59,724,754 | $89,696,410 | $99,499,206 |
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