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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Manganese dioxide | $159,189 | $89,200 | $295,157 | $1,489,789 | $901,352 | $179,052 |
| Manganese oxides other than manganese dioxide | $1,931,416 | $3,588,112 | $3,054,536 | $4,425,161 | $3,700,289 | $6,116,960 |
| Total | $2,090,605 | $3,677,312 | $3,349,693 | $5,914,950 | $4,601,641 | $6,296,012 |
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