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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Silver nitrate | $1,135 | $1,753 | $8,202 | $10,502 | $7,055 | $10,758 | $7,718 |
| Silver comps. other than silver nitrate | $439 | | $1,111 | $489 | | $145 | |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | $632 | $976 | $126 | $1,122 | $357 | $8,011 | |
| Total | $2,206 | $2,729 | $9,439 | $12,113 | $7,412 | $18,914 | $7,718 |
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