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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Activated carbon | $2,569,701 | $3,024,558 | $3,648,854 | $2,722,645 | $1,543,756 | $2,551,216 | $2,114,320 |
| Activated nat. min. prods. other than of activated carbon; animal black, in ... | $1,557,769 | $1,490,805 | $1,579,895 | $2,525,569 | $1,518,878 | $2,616,280 | $2,795,532 |
| Total | $4,127,470 | $4,515,363 | $5,228,749 | $5,248,214 | $3,062,634 | $5,167,496 | $4,909,852 |
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