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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $6,521,370 | $5,965,329 | $5,193,154 | $6,891,972 | $3,159,758 | $2,756,620 | $4,965,028 |
| Manganese oxides other than manganese dioxide | $13,292,736 | $15,945,243 | $15,787,777 | $28,634,533 | $19,472,484 | $23,884,588 | $20,948,665 |
| Total | $19,814,106 | $21,910,572 | $20,980,931 | $35,526,505 | $22,632,242 | $26,641,208 | $25,913,693 |
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