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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals clad with silver, not further worked than semi-manufactured | $536,865 | $899,777 | $1,368,704 | $1,273,601 | $760,288 | $1,004,384 | $1,262,356 |
| Total | $536,865 | $899,777 | $1,368,704 | $1,273,601 | $760,288 | $1,004,384 | $1,262,356 |
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