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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 ... | $459,548 | $550,477 | $872,939 | $1,106,874 | $161,471 | $229,756 | $395,381 |
| Total | $459,548 | $550,477 | $872,939 | $1,106,874 | $161,471 | $229,756 | $395,381 |
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