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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $1,038,900 | $1,221,481 | $1,269,809 | $1,140,891 | $440,839 | $580,282 | $658,953 |
| Manganese oxides other than manganese dioxide | $312,827 | $534,630 | $508,893 | $529,150 | $1,166,745 | $936,614 | $1,673,144 |
| Total | $1,351,727 | $1,756,111 | $1,778,702 | $1,670,041 | $1,607,584 | $1,516,896 | $2,332,097 |
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