2004 2005 2006 2007 2008 2009 2010 2011 $0 $100,000 $200,000 $300,000 $400,000 $500,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $43,800 | 55,734 | 55,734 |
| 2006 | $82,800 | 90,212 | 90,212 |
| 2007 | $161,900 | 317,042 | 317,042 |
| 2008 | $426,500 | 728,650 | 728,650 |
| 2009 | $213,000 | 229,500 | 229,500 |
| 2010 | $37,700 | 40,000 | 40,000 |
Note: Quantity represents Weight in kilograms
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