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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Activated carbon | $624,220 | $837,342 | $974,322 | $996,904 | $809,952 | $867,007 | $1,115,709 |
| Activated nat. min. prods. other than of activated carbon; animal black, in ... | $3,034,546 | $3,218,594 | $3,401,744 | $3,433,689 | $1,832,289 | $2,127,238 | $2,163,558 |
| Total | $3,658,766 | $4,055,936 | $4,376,066 | $4,430,593 | $2,642,241 | $2,994,245 | $3,279,267 |
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