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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | $16,765 | $6,638 | $3,728 | $14,395 | $14,601 | $28,845 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | $1,746 | $258 | $1,806 | $5,748 | $15,028 | $17,489 |
| Total | $18,511 | $6,896 | $5,534 | $20,143 | $29,629 | $46,334 |
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