Commodity2005200620072008200920102011
Bitumen & asphalt, nat.; asphaltites & asphaltic rocks$9,585,960$8,978,034$10,124,318$12,357,932$38,696$8,976$9,583
Total$9,585,960$8,978,034$10,124,318$12,357,932$38,696$8,976$9,583