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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $10,199 | $16,502 | $43,965 | $55,495 | $33,583 | $247 | $134,654 |
| Manganese oxides other than manganese dioxide | $32,781 | $27,132 | $50,555 | $77,622 | $211,665 | $102,691 | $113,805 |
| Total | $42,980 | $43,634 | $94,520 | $133,117 | $245,248 | $102,938 | $248,459 |
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