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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Sodium | $3,083 | $771 | $641 | $34,736 | $17,219 | $23,899 |
| Alkali/alkaline-earth metals other than sodium & calcium | $259 | $27 | $113 | $3,129 | $14,785 | $63 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $12,372 | | | | | |
| Mercury | $798 | $6,351 | $321 | $6,074 | $642 | $388 |
| Total | $16,512 | $7,149 | $1,075 | $43,939 | $32,646 | $24,350 |
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