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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | | $2,404 | $3,057 | $2,573 | $1,089 | $904 | $1,948 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | $2,209 | $4,379 | $1,551 | $6,513 | $4,301 | $6,468 | $5,626 |
| Total | $2,209 | $6,783 | $4,608 | $9,086 | $5,390 | $7,372 | $7,574 |
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