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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Petroleum bitumen | $117,121 | $415,657 | $7,352 | | | | |
| Residues of petroleum oils/oils obt. from bituminous mins., other than petr ... | $350 | $16,532 | $27,511 | $13,683 | $5,301 | $55,621 | $18,126 |
| Total | $117,471 | $432,189 | $34,863 | $13,683 | $5,301 | $55,621 | $18,126 |
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