|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium | | $370 | | $973 | $60 | $39 | $813 |
| Alkali/alkaline-earth metals other than sodium & calcium | $2,688 | $2,595 | $6,052 | $7,201 | $1,796 | $3,915 | $6,645 |
| Mercury | $4,927 | $14,012 | $75,899 | $326 | $430 | $768 | $547 |
| Total | $7,615 | $16,977 | $81,951 | $8,500 | $2,286 | $4,722 | $8,005 |
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