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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Petroleum coke, calcined | $12,921,508 | $15,704,498 | $10,819,012 | $12,755,798 | $14,816,527 | $22,163,017 |
| Petroleum bitumen | $3,624,001 | $4,658,522 | $8,068,318 | $9,054,426 | $8,713,667 | $8,407,733 |
| Residues of petroleum oils/oils obt. from bituminous mins., other than petr ... | $1,774 | $583,297 | $646,900 | $17,239 | $7,715 | $6,282 |
| Total | $16,547,283 | $20,946,317 | $19,534,230 | $21,827,463 | $23,537,909 | $30,577,032 |
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