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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals clad with silver, not further worked than semi-manufactured | $533,495 | $1,239,384 | $1,610,910 | $1,225,094 | $1,005,504 | $982,117 | $1,773,341 |
| Total | $533,495 | $1,239,384 | $1,610,910 | $1,225,094 | $1,005,504 | $982,117 | $1,773,341 |
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