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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $38,163,136 | $53,671,014 | $46,790,327 | $59,132,545 | $64,070,196 | $77,883,601 | $86,983,152 |
| Manganese oxides other than manganese dioxide | $3,717,052 | $5,053,610 | $10,242,434 | $12,963,993 | $7,084,943 | $11,378,140 | $10,389,029 |
| Total | $41,880,188 | $58,724,624 | $57,032,761 | $72,096,538 | $71,155,139 | $89,261,741 | $97,372,181 |
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