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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Manganese dioxide | $74,356 | $72,485 | $104,864 | $124,066 | $105,675 | $121,498 |
| Manganese oxides other than manganese dioxide | $17,577 | $20,965 | $16,160 | $96,987 | $27,941 | $18,892 |
| Total | $91,933 | $93,450 | $121,024 | $221,053 | $133,616 | $140,390 |
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