Commodity2005200620072008200920102011
Bitumen & asphalt, nat.; asphaltites & asphaltic rocks$1,161,968$3,237,208$31,981$4,382,879$8,700$23,285$130,996
Total$1,161,968$3,237,208$31,981$4,382,879$8,700$23,285$130,996