2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $10,000 $20,000 $30,000 $40,000 $50,000 $60,000 $70,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,943 | 464 | 464 |
| 2006 | $12,430 | 1,463 | 1,463 |
| 2007 | $20,246 | 2,632 | 2,632 |
| 2008 | $5,059 | 758 | 758 |
| 2009 | $61,107 | 6,696 | 6,696 |
| 2010 | $43,258 | 1,821 | 1,821 |
| 2011 | $56,990 | 13,128 | 13,128 |
Note: Quantity represents Weight in kilograms
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