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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 ... | $2,896,008 | $4,002,584 | $4,621,629 | $6,077,665 | $4,798,489 | $6,460,481 | $8,113,614 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $260,160 | $304,476 | $697,209 | $423,980 | $806,118 | $798,048 | $744,084 |
| Total | $3,156,168 | $4,307,060 | $5,318,838 | $6,501,645 | $5,604,607 | $7,258,529 | $8,857,698 |
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