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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $29,796 | $54,105 | $44,998 | $92,341 | $33,002 | $38,209 | $16,603 |
| Manganese oxides other than manganese dioxide | $198 | $23,582 | $1,180 | $62,344 | | $21,696 | $237,388 |
| Total | $29,994 | $77,687 | $46,178 | $154,685 | $33,002 | $59,905 | $253,991 |
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