Commodity2005200620072008200920102011
Bituminous/oil shale & tar sands  $70    
Bitumen & asphalt, nat.; asphaltites & asphaltic rocks$56,380$130,116$1,567,269$1,756,624$269,011$7,866$78,224
Total$56,380$130,116$1,567,339$1,756,624$269,011$7,866$78,224