|
| Commodity | 2005 | 2006 | 2007 | 2009 |
| Sodium | $960 | $12,800 | $3,712 | $45 |
| Alkali/alkaline-earth metals other than sodium & calcium | | $362 | $1,682 | $446 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | | | $527 | |
| Mercury | $9,970 | $9,635 | $15,451 | $4,223 |
| Total | $10,930 | $22,797 | $21,372 | $4,714 |
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