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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2011 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | $16,748 | $2,735 | $11,817 | $2,893 | $41 | $333 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | | | | | $9,258 | $10,848 |
| Total | $16,748 | $2,735 | $11,817 | $2,893 | $9,299 | $11,181 |
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