2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $50,000 $100,000 $150,000 $200,000 $250,000 $300,000 $350,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $184,717 | 16,999 | 16,999 |
| 2006 | $208,163 | 18,606 | 18,606 |
| 2007 | $298,046 | 28,006 | 28,006 |
| 2008 | $308,868 | 23,528 | 23,528 |
| 2009 | $237,184 | 18,755 | 18,755 |
| 2010 | $236,070 | 18,489 | 18,489 |
| 2011 | $258,699 | 19,203 | 19,203 |
Note: Quantity represents Weight in kilograms
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