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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 ... | $1,167,982 | $388,865 | $579,759 | $798,517 | $2,951,571 | $612,351 | $747,946 |
| Total | $1,167,982 | $388,865 | $579,759 | $798,517 | $2,951,571 | $612,351 | $747,946 |
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