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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Petroleum bitumen | $2,984,976 | $14,514,547 | $13,933,351 | $13,695,631 | $15,934,079 | $12,770,404 | $38,543,994 |
| Residues of petroleum oils/oils obt. from bituminous mins., other than petr ... | | $3,932 | | | | | $5,715 |
| Total | $2,984,976 | $14,518,479 | $13,933,351 | $13,695,631 | $15,934,079 | $12,770,404 | $38,549,709 |
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