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 | $40,619 | 2,053 | 2,053 |
| 2006 | $68,623 | 9,369 | 9,369 |
| 2007 | $77,981 | 883 | 883 |
| 2008 | $310,732 | 30,651 | 30,651 |
| 2009 | $90,019 | 5,546 | 5,546 |
| 2010 | $63,422 | 517 | 517 |
| 2011 | $177,274 | 1,932 | 1,932 |
Note: Quantity represents Weight in kilograms
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