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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Silver nitrate | $1,570 | $2,615 | $84 | | $1,969 | $1,447 |
| Silver comps. other than silver nitrate | | | $49 | $367 | $9,126 | $9,427 |
| Gold comps. | $5,104 | $8,002 | | $307 | | |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | | $1,137 | $10 | | | |
| Total | $6,674 | $11,754 | $143 | $674 | $11,095 | $10,874 |
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