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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $2,107 | $13,205 | $198,000 | $250,001 | $159,378 | $304,766 | $566,363 |
| Manganese oxides other than manganese dioxide | $32,388 | $186,130 | $19,946 | $1,592 | $1,418 | $22,364 | $2,512 |
| Total | $34,495 | $199,335 | $217,946 | $251,593 | $160,796 | $327,130 | $568,875 |
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