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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 |
| Colloidal precious metals | | $110 | | $6,450 | |
| Silver nitrate | $4,051 | $1,319 | | $7,872 | $1,520 |
| Silver comps. other than silver nitrate | | $74,294 | | $78,139 | $209 |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | $25,340 | $468 | $6,353 | | $7,702 |
| Total | $29,391 | $76,191 | $6,353 | $92,461 | $9,431 |
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