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 | $277,892 | 7,956 | 7,956 |
| 2006 | $134,820 | 2,258 | 2,258 |
| 2007 | $197,086 | 2,523 | 2,523 |
| 2008 | $148,608 | 1,698 | 1,698 |
| 2009 | $97,507 | 995 | 995 |
| 2010 | $112,284 | 763 | 763 |
| 2011 | $105,498 | 841 | 841 |
Note: Quantity represents Weight in kilograms
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