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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 ... | $8,448,599 | $3,077,971 | $3,453,473 | $5,760,243 | $4,607,671 | $3,334,507 | $3,174,484 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $3,323,070 | $2,630,746 | $1,927,354 | $1,931,304 | $5,296,953 | $1,991,363 | $1,864,982 |
| Total | $11,771,669 | $5,708,717 | $5,380,827 | $7,691,547 | $9,904,624 | $5,325,870 | $5,039,466 |
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