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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $60,177 | $16,791 | $42,974 | $83,797 | $43,010 | $44,347 | $27,342 |
| Manganese oxides other than manganese dioxide | $75,578 | $59,010 | $39,767 | $136,157 | $158,723 | $167,401 | $164,241 |
| Total | $135,755 | $75,801 | $82,741 | $219,954 | $201,733 | $211,748 | $191,583 |
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