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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals clad with silver, not further worked than semi-manufactured | $3,246,063 | $5,154,755 | $4,921,722 | $3,368,544 | $2,402,160 | $3,753,829 | $5,596,195 |
| Total | $3,246,063 | $5,154,755 | $4,921,722 | $3,368,544 | $2,402,160 | $3,753,829 | $5,596,195 |
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