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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Sodium | $790 | $2,768 | $3,016 | $2,551 | $7,156 | $6,373 |
| Alkali/alkaline-earth metals other than sodium & calcium | | $14,452 | $118 | | $1,757 | $2,088 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $979 | | | | | |
| Mercury | $1,844 | $338 | $189 | $30 | $673 | $25 |
| Total | $3,613 | $17,558 | $3,323 | $2,581 | $9,586 | $8,486 |
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