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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 ... | $1,891,061 | $2,256,228 | $2,751,375 | $2,565,212 | $2,109,698 | $2,180,259 | $2,532,285 |
| Articles of asphalt/sim. mat. (e.g., petroleum bitumen/coal tar pitch), oth ... | $1,593,458 | $1,228,432 | $888,632 | $2,759,659 | $1,620,115 | $1,415,480 | $1,863,126 |
| Total | $3,484,519 | $3,484,660 | $3,640,007 | $5,324,871 | $3,729,813 | $3,595,739 | $4,395,411 |
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