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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $31,696 | $348 | $1,781 | $7,892 | $2,271 | $3,649 | $6,500 |
| Manganese oxides other than manganese dioxide | $2,487 | $7,909 | $10,628 | $35,295 | $960 | $4,023 | |
| Total | $34,183 | $8,257 | $12,409 | $43,187 | $3,231 | $7,672 | $6,500 |
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