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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 ... | $3,294,681 | $3,641,066 | $3,375,899 | $5,036,388 | $2,659,193 | $4,287,386 | $4,334,421 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $283,252 | $479,777 | $928,852 | $1,332,018 | $1,367,037 | $2,014,651 | $3,030,696 |
| Total | $3,577,933 | $4,120,843 | $4,304,751 | $6,368,406 | $4,026,230 | $6,302,037 | $7,365,117 |
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