|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | $13,792 | | | | | | |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $317,429 | $234,249 | $150,151 | $220,209 | $130,254 | $133,223 | $30,043 |
| Total | $331,221 | $234,249 | $150,151 | $220,209 | $130,254 | $133,223 | $30,043 |
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