|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium | $5,500 | | $200 | $100 | $200 | $100 | $5,400 |
| Alkali/alkaline-earth metals other than sodium & calcium | | $1,500 | $3,500 | $400 | $200 | $1,400 | $1,700 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $9,100 | $18,600 | $14,200 | $34,700 | $12,100 | $22,300 | $34,100 |
| Mercury | | | | | | | $3,700 |
| Total | $14,600 | $20,100 | $17,900 | $35,200 | $12,500 | $23,800 | $44,900 |
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