2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $100,000 $200,000 $300,000 $400,000 $500,000 $600,000 $700,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $82,560 | 5,326 | 5,326 |
| 2006 | $305,039 | 36,118 | 36,118 |
| 2007 | $462,823 | 108,200 | 108,200 |
| 2008 | $580,931 | 86,408 | 86,408 |
| 2009 | $396,861 | 65,049 | 65,049 |
| 2010 | $483,518 | 69,794 | 69,794 |
| 2011 | $441,987 | 52,528 | 52,528 |
Note: Quantity represents Weight in kilograms
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