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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $725,486 | $1,468,031 | $3,047,851 | $3,890,456 | $2,611,369 | $3,664,848 | $3,170,315 |
| Manganese oxides other than manganese dioxide | $416,272 | $403,608 | $601,141 | $524,798 | $577,086 | $350,655 | $278,464 |
| Total | $1,141,758 | $1,871,639 | $3,648,992 | $4,415,254 | $3,188,455 | $4,015,503 | $3,448,779 |
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