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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals clad with silver, not further worked than semi-manufactured | $6,125,973 | $9,390,770 | $9,562,927 | $6,046,285 | $5,149,460 | $6,421,782 | $9,432,625 |
| Total | $6,125,973 | $9,390,770 | $9,562,927 | $6,046,285 | $5,149,460 | $6,421,782 | $9,432,625 |
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