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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals clad with silver, not further worked than semi-manufactured | $625,400 | $454,578 | $269,473 | $1,054,872 | $217,549 | $314,218 | $170,678 |
| Total | $625,400 | $454,578 | $269,473 | $1,054,872 | $217,549 | $314,218 | $170,678 |
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