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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), in ... | $37,439,307 | $44,520,701 | $49,766,303 | $63,259,733 | $48,943,314 | $49,073,337 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $12,235,279 | $6,880,746 | $9,906,869 | $10,889,067 | $6,674,469 | $6,244,372 |
| Total | $49,674,586 | $51,401,447 | $59,673,172 | $74,148,800 | $55,617,783 | $55,317,709 |
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