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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), in ... | $71,803,709 | $82,120,132 | $72,337,676 | $72,630,332 | $77,344,941 | $94,544,772 | $126,841,746 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $37,644,917 | $41,384,178 | $42,397,429 | $78,077,038 | $84,676,156 | $86,681,866 | $148,889,792 |
| Total | $109,448,626 | $123,504,310 | $114,735,105 | $150,707,370 | $162,021,097 | $181,226,638 | $275,731,538 |
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