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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $266,377 | $884,408 | $1,227,537 | $1,351,348 | $1,634,434 | $2,233,998 | $4,046,398 |
| Manganese oxides other than manganese dioxide | $597,844 | $960,410 | $1,466,201 | $2,305,840 | $1,935,444 | $2,512,917 | $3,639,789 |
| Total | $864,221 | $1,844,818 | $2,693,738 | $3,657,188 | $3,569,878 | $4,746,915 | $7,686,187 |
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