2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $50,000 $100,000 $150,000 $200,000 $250,000 $300,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $35,889 | 10,199 | 10,199 |
| 2006 | $23,237 | 16,489 | 16,489 |
| 2007 | $152,090 | 551,204 | 551,204 |
| 2008 | $252,351 | 1,062,121 | 1,062,121 |
| 2009 | $188,200 | 772,738 | 772,738 |
| 2010 | $167,511 | 645,804 | 645,804 |
| 2011 | $206,231 | 277,852 | 277,852 |
Note: Quantity represents Weight in kilograms
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