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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $6,874 | $45,303 | $40,328 | $29,225 | $26,942 | $18,446 | $5,637 |
| Manganese oxides other than manganese dioxide | $27,582 | $70,353 | $124,294 | $79,585 | $89,032 | $82,176 | $111,142 |
| Total | $34,456 | $115,656 | $164,622 | $108,810 | $115,974 | $100,622 | $116,779 |
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