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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Colloidal precious metals | $1,089 | $171 | $213 | $11,796 | $79 | $27,313 | $25,065 |
| Silver nitrate | $62,092 | $124,339 | $214,541 | $437,803 | $246,352 | $93,513 | $56,335 |
| Silver comps. other than silver nitrate | $49,459 | $68,910 | $123,169 | $25,936 | $54,391 | $57,040 | $82,181 |
| Gold comps. | $2,441 | $4,034 | $2,507 | $4,086 | $8,247 | $4,722 | $6,334 |
| Inorganic/organic comps. of precious metals, whether or not chemically defi ... | $27,491 | $52,369 | $52,423 | $114,550 | $145,299 | $161,163 | $86,262 |
| Total | $142,572 | $249,823 | $392,853 | $594,171 | $454,368 | $343,751 | $256,177 |
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