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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Activated carbon | $11,284 | $6,443 | $1,206 | $5,698 | $1,302 | $5,336 |
| Activated nat. min. prods. other than of activated carbon; animal black, in ... | $47,295 | $49,922 | $49,609 | $21,384 | $15,534 | $3,571 |
| Total | $58,579 | $56,365 | $50,815 | $27,082 | $16,836 | $8,907 |
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