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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $391,221 | $44,370 | $125,659 | $427,376 | $115,813 | $45,767 | $105,931 |
| Manganese oxides other than manganese dioxide | $20,051 | $7,909 | $51,525 | $23,139 | $353,390 | $103,036 | $130,444 |
| Total | $411,272 | $52,279 | $177,184 | $450,515 | $469,203 | $148,803 | $236,375 |
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