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| Commodity | 2005 | 2006 | 2007 |
| Sodium | $50,004 | $22,883 | $31,350 |
| Alkali/alkaline-earth metals other than sodium & calcium | $269 | | $3,991 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $2,175 | | $236 |
| Mercury | | | $862 |
| Total | $52,448 | $22,883 | $36,439 |
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