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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals clad with silver, not further worked than semi-manufactured | $664,942 | $1,072,375 | $597,706 | $685,849 | $346,546 | $480,980 | $959,575 |
| Total | $664,942 | $1,072,375 | $597,706 | $685,849 | $346,546 | $480,980 | $959,575 |
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