Commodity2005200620072008200920102011
Bituminous/oil shale & tar sands$6,699$24,580$181,100$90,077 $15,450$21,278
Bitumen & asphalt, nat.; asphaltites & asphaltic rocks$32,020$128,061$227,970$179,538$152,343$1,083,278$588,396
Total$38,719$152,641$409,070$269,615$152,343$1,098,728$609,674