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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $877,191 | $15,064 | $208,574 | $106,208 | $61,130 | $5,302 | $143,304 |
| Manganese oxides other than manganese dioxide | $899,587 | $1,186,297 | $2,152,980 | $3,615,510 | $1,821,405 | $1,573,441 | $1,167,305 |
| Total | $1,776,778 | $1,201,361 | $2,361,554 | $3,721,718 | $1,882,535 | $1,578,743 | $1,310,609 |
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