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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium | $996 | $2,707 | $2,564 | $5,689 | $18,931 | $28,081 | $59 |
| Alkali/alkaline-earth metals other than sodium & calcium | $1,555 | $477 | $3,430 | $22,400 | | $4,733 | $2,249 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $24,434 | $9,924 | $5,292 | | | | |
| Mercury | $8,087 | $1,729 | $2,904 | $1,334 | $271 | $318 | $406 |
| Total | $35,072 | $14,837 | $14,190 | $29,423 | $19,202 | $33,132 | $2,714 |
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