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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | $4,335,538 | $4,294,350 | $5,821,713 | $5,073,651 | $1,623,563 | $77,050 | $35,054 |
| Total | $4,335,538 | $4,294,350 | $5,821,713 | $5,073,651 | $1,623,563 | $77,050 | $35,054 |
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