|
| Commodity | 2005 | 2006 | 2007 | 2008 |
| Colloidal precious metals | $13 | $1,554 | | |
| Silver nitrate | $316 | $131 | $1,664 | $2,164 |
| Silver comps. other than silver nitrate | $44 | | | |
| Gold comps. | $3,313 | $5,766 | | |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | $17,205 | $10,626 | $11,347 | $17,065 |
| Total | $20,891 | $18,077 | $13,011 | $19,229 |
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