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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Activated carbon | $841,447 | $881,676 | $1,095,225 | $1,358,849 | $1,471,827 | $1,770,310 | $1,707,148 |
| Activated nat. min. prods. other than of activated carbon; animal black, in ... | $2,041,672 | $2,437,847 | $1,716,671 | $2,703,625 | $3,829,757 | $3,842,975 | $4,163,034 |
| Total | $2,883,119 | $3,319,523 | $2,811,896 | $4,062,474 | $5,301,584 | $5,613,285 | $5,870,182 |
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