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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Silver nitrate | $2,459 | $147 | $4,269 | $3,231 | $552 | $474 | $1,481 |
| Silver comps. other than silver nitrate | | | | $17 | | | |
| Gold comps. | $10 | $228 | $139 | $195 | $90 | | $200 |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | $533 | $1,743 | $554 | $1,324 | $139 | $484 | |
| Total | $3,002 | $2,118 | $4,962 | $4,767 | $781 | $958 | $1,681 |
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