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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $212,473 | $714,131 | $375,211 | $551,307 | $64,875 | $1,266 | $593,256 |
| Manganese oxides other than manganese dioxide | $1,014,134 | $1,652,258 | $2,185,998 | $3,427,032 | $2,944,823 | $3,128,146 | $3,571,172 |
| Total | $1,226,607 | $2,366,389 | $2,561,209 | $3,978,339 | $3,009,698 | $3,129,412 | $4,164,428 |
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