Commodity2005200620072008200920102011
Bituminous/oil shale & tar sands$415,042$466,594$361,368$445,399$407,760$3,663,428$7,043,388
Bitumen & asphalt, nat.; asphaltites & asphaltic rocks$42,202,997$58,688,044$58,168,422$177,674,094$216,005,115$232,826,702$256,500,127
Total$42,618,039$59,154,638$58,529,790$178,119,493$216,412,875$236,490,130$263,543,515