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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Activated carbon | $6,496 | $4,323 | $3,172 | $25,194 | $3,757 | $22,455 | $32,450 |
| Activated nat. min. prods. other than of activated carbon; animal black, in ... | $10,446 | $6,398 | $14,580 | $18,985 | $16,723 | $44,310 | $40,334 |
| Total | $16,942 | $10,721 | $17,752 | $44,179 | $20,480 | $66,765 | $72,784 |
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