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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 ... | $80,046,000 | $84,533,000 | $96,380,000 | $134,040,000 | $100,900,000 | $106,320,659 | $129,472,657 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $16,844,000 | $23,383,000 | $24,221,000 | $23,835,000 | $22,660,000 | $25,600,646 | $37,366,740 |
| Total | $96,890,000 | $107,916,000 | $120,601,000 | $157,875,000 | $123,560,000 | $131,921,305 | $166,839,397 |
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