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 | $12,964 | 1,067 | 1,067 |
| 2006 | $36,508 | 6,549 | 6,549 |
| 2007 | $36,715 | 6,813 | 6,813 |
| 2008 | $50,226 | 7,351 | 7,351 |
| 2009 | $35,175 | 5,981 | 5,981 |
| 2010 | $55,897 | 8,326 | 8,326 |
| 2011 | $34,308 | 5,048 | 5,048 |
Note: Quantity represents Weight in kilograms
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