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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $951 | $1,272 | $976 | $12,332 | $19,085 | $9,351 | $2,626 |
| Manganese oxides other than manganese dioxide | $7,976 | $6,182 | $8,621 | $45,106 | $8,642 | $94,661 | $94,571 |
| Total | $8,927 | $7,454 | $9,597 | $57,438 | $27,727 | $104,012 | $97,197 |
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