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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 ... | $4,761,125 | $4,337,046 | $8,792,299 | $7,610,963 | $4,471,719 | $4,123,606 | $5,354,221 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $270,476 | $669,826 | $2,082,058 | $1,440,750 | $1,572,489 | $1,303,853 | $1,976,064 |
| Total | $5,031,601 | $5,006,872 | $10,874,357 | $9,051,713 | $6,044,208 | $5,427,459 | $7,330,285 |
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