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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Base metals/silver, clad with gold, not further worked than semi-manufactur ... | $1,007,493 | $1,128,573 | $1,542,683 | $1,836,661 | $1,341,566 | $2,725,997 | $3,432,176 |
| Total | $1,007,493 | $1,128,573 | $1,542,683 | $1,836,661 | $1,341,566 | $2,725,997 | $3,432,176 |
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