Commodity2005200620072008200920102011
Bituminous/oil shale & tar sands      $3,557
Bitumen & asphalt, nat.; asphaltites & asphaltic rocks$159,894$132,739$235,498$442,097$225,580$339,681$338,229
Total$159,894$132,739$235,498$442,097$225,580$339,681$341,786