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| Commodity | 2006 | 2008 | 2009 | 2010 | 2011 |
| Colloidal precious metals | | | $5,262 | $8,567 | $5,106 |
| Silver nitrate | | $1,747 | $4,922 | | |
| Silver comps. other than silver nitrate | | | $1,058 | | |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | $39,578 | | | $11 | |
| Total | $39,578 | $1,747 | $11,242 | $8,578 | $5,106 |
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