Commodity2005200620072008200920102011
Petroleum coke, not calcined  $1,918,341$1,470,737   
Petroleum bitumen$2,527,110$4,265,866$3,360,956$7,739,050$11,636,401$15,933,324$30,190,411
Residues of petroleum oils/oils obt. from bituminous mins., other than petr ...$47,751     $90,817
Total$2,574,861$4,265,866$5,279,297$9,209,787$11,636,401$15,933,324$30,281,228