|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Unrefined copper; copper anodes for electrolytic refining | $1,572,576 | $2,513,878 | $1,881,242 | $3,923,950 | $748,851 | $9,212,013 | $10,633,482 |
| Total | $1,572,576 | $2,513,878 | $1,881,242 | $3,923,950 | $748,851 | $9,212,013 | $10,633,482 |
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