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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Silver nitrate | $781 | $1,044 | $142 | $388 | $532 | $5,185 |
| Silver comps. other than silver nitrate | | | $91 | | | |
| Gold comps. | | | $1,133 | $28,692 | $45,449 | |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | | $286 | $3,496 | $820 | | $3,734 |
| Total | $781 | $1,330 | $4,862 | $29,900 | $45,981 | $8,919 |
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