2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $20,000 $40,000 $60,000 $80,000 $100,000 $120,000 $140,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $27,623 | 5,858 | 5,858 |
| 2006 | $62,406 | 17,494 | 17,494 |
| 2007 | $101,657 | 21,922 | 21,922 |
| 2008 | $123,113 | 21,955 | 21,955 |
| 2009 | $64,917 | 15,196 | 15,196 |
| 2010 | $49,563 | 15,412 | 15,412 |
| 2011 | $109,146 | 33,515 | 33,515 |
Note: Quantity represents Weight in kilograms
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