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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals/silver, clad with gold, not further worked than semi-manufactur ... | $2,460,351 | $4,004,018 | $7,350,361 | $10,810,305 | $7,786,404 | $13,270,698 | $23,093,462 |
| Total | $2,460,351 | $4,004,018 | $7,350,361 | $10,810,305 | $7,786,404 | $13,270,698 | $23,093,462 |
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