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 | $63,980 | 30,480 | 30,480 |
| 2006 | $40,995 | 22,642 | 22,642 |
| 2007 | $28,278 | 21,822 | 21,822 |
| 2008 | $63,212 | 49,470 | 49,470 |
| 2009 | $220,228 | 139,405 | 139,405 |
| 2010 | $121,382 | 84,190 | 84,190 |
| 2011 | $302,544 | 260,531 | 260,531 |
Note: Quantity represents Weight in kilograms
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