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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals clad with silver, not further worked than semi-manufactured | $216,633 | $346,477 | $180,693 | $103,756 | $214,608 | $109,238 | $2,936,277 |
| Total | $216,633 | $346,477 | $180,693 | $103,756 | $214,608 | $109,238 | $2,936,277 |
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