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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 ... | $7,215,857 | $9,162,235 | $10,295,528 | $11,865,247 | $8,964,951 | $9,538,738 | $8,975,350 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $1,346,515 | $1,545,026 | $1,835,475 | $1,806,910 | $2,299,102 | $2,603,183 | $1,569,591 |
| Total | $8,562,372 | $10,707,261 | $12,131,003 | $13,672,157 | $11,264,053 | $12,141,921 | $10,544,941 |
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