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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals/silver/gold, clad with platinum, not further worked than semi-m ... | $499,588 | $2,186,657 | $904,662 | $2,749,714 | $1,032,844 | $411,118 | $327,002 |
| Total | $499,588 | $2,186,657 | $904,662 | $2,749,714 | $1,032,844 | $411,118 | $327,002 |
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