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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $236 | $10,872 | $38,672 | $60,758 | $96,950 | $140,568 | $123,849 |
| Manganese oxides other than manganese dioxide | $531,147 | $44,041 | $60,556 | $59,114 | $29,247 | $1,874 | $4,175 |
| Total | $531,383 | $54,913 | $99,228 | $119,872 | $126,197 | $142,442 | $128,024 |
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