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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 ... | $839,078 | $1,579,931 | $2,665,620 | $1,376,763 | $1,246,668 | $2,097,187 | $2,542,925 |
| Total | $839,078 | $1,579,931 | $2,665,620 | $1,376,763 | $1,246,668 | $2,097,187 | $2,542,925 |
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