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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $2,381,770 | $2,210,155 | $2,473,383 | $4,690,702 | $4,027,825 | $3,941,160 | $3,587,677 |
| Manganese oxides other than manganese dioxide | $443,025 | $722,529 | $299,904 | $1,030,916 | $372,331 | $839,365 | $2,479,834 |
| Total | $2,824,795 | $2,932,684 | $2,773,287 | $5,721,618 | $4,400,156 | $4,780,525 | $6,067,511 |
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