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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Activated carbon | $99,462 | $80,398 | $72,024 | $183,203 | $101,347 | $107,244 | $148,794 |
| Activated nat. min. prods. other than of activated carbon; animal black, in ... | $264,397 | $386,311 | $357,172 | $441,511 | $458,032 | $458,353 | $362,534 |
| Total | $363,859 | $466,709 | $429,196 | $624,714 | $559,379 | $565,597 | $511,328 |
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