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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 ... | $4,392,022 | $26,630,855 | $5,422,392 | $12,187,826 | $10,587,233 | $3,998,736 | $1,371,312 |
| Total | $4,392,022 | $26,630,855 | $5,422,392 | $12,187,826 | $10,587,233 | $3,998,736 | $1,371,312 |
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