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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 ... | $9,364,892 | $11,529,783 | $15,467,655 | $18,421,424 | $7,555,121 | $5,758,448 | $9,781,931 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $1,501,082 | $3,850,452 | $4,432,117 | $6,350,690 | $5,524,493 | $4,385,542 | $3,612,194 |
| Total | $10,865,974 | $15,380,235 | $19,899,772 | $24,772,114 | $13,079,614 | $10,143,990 | $13,394,125 |
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