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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Activated carbon | $5,091,501 | $6,950,411 | $6,427,195 | $7,345,043 | $8,609,468 | $13,687,605 | $14,633,200 |
| Activated nat. min. prods. other than of activated carbon; animal black, in ... | $10,030,859 | $13,124,986 | $14,522,908 | $29,799,118 | $31,424,653 | $39,463,867 | $38,019,204 |
| Total | $15,122,360 | $20,075,397 | $20,950,103 | $37,144,161 | $40,034,121 | $53,151,472 | $52,652,404 |
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