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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Activated carbon | $1,577,416 | $2,673,367 | $468,709 | $1,922,018 | $660,004 | $2,463,717 | $3,290,791 |
| Activated nat. min. prods. other than of activated carbon; animal black, in ... | $2,498,188 | $2,564,683 | $2,304,576 | $2,564,411 | $2,247,479 | $9,440,205 | $10,793,539 |
| Total | $4,075,604 | $5,238,050 | $2,773,285 | $4,486,429 | $2,907,483 | $11,903,922 | $14,084,330 |
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