|
| Commodity | 2005 | 2007 | 2008 | 2009 | 2011 |
| Colloidal precious metals | | $3,947 | | | |
| Silver nitrate | | | $15 | | $335 |
| Silver comps. other than silver nitrate | | | | | $265 |
| Gold comps. | | | $180 | | |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | $1,193 | | $2,571 | $2,850 | $1,333 |
| Total | $1,193 | $3,947 | $2,766 | $2,850 | $1,933 |
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