|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $771,522 | $222,730 | $1,702,704 | $906,830 | $359,057 | $1,283,836 | $2,368,858 |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $3,867,946 | $4,814,046 | $6,219,198 | $6,395,336 | $3,108,334 | $3,845,914 | $3,656,378 |
| Total | $4,639,468 | $5,036,776 | $7,921,902 | $7,302,166 | $3,467,391 | $5,129,750 | $6,025,236 |
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