2004 2005 2006 2007 2008 2009 2010 2011 $0 $100,000 $200,000 $300,000 $400,000 $500,000 $600,000 $700,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $372,488 | 129,256 | 129,256 |
| 2006 | $444,984 | 110,295 | 110,295 |
| 2007 | $393,775 | 121,114 | 121,114 |
| 2008 | $580,731 | 164,433 | 164,433 |
| 2009 | $278,298 | 93,372 | 93,372 |
| 2010 | $575,329 | 149,010 | 149,010 |
Note: Quantity represents Weight in kilograms
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