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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium | $1,801 | $2,135 | $3,626 | $4,998 | $2,343 | $2,812 | $2,615 |
| Alkali/alkaline-earth metals other than sodium & calcium | $79 | $315 | | | $64 | | |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | | | | | $89 | | |
| Mercury | $484 | $41 | $1,167 | $170 | $45 | $697 | $685 |
| Total | $2,364 | $2,491 | $4,793 | $5,168 | $2,541 | $3,509 | $3,300 |
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