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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 ... | $8,195,513 | $8,717,891 | $11,780,084 | $12,646,084 | $10,148,793 | $10,342,504 | $13,443,106 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $202,227 | $170,312 | $198,757 | $252,235 | $127,867 | $118,668 | $163,275 |
| Total | $8,397,740 | $8,888,203 | $11,978,841 | $12,898,319 | $10,276,660 | $10,461,172 | $13,606,381 |
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