2004 2005 2006 2007 2008 2009 2010 2011 $0 $50,000 $100,000 $150,000 $200,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $36,324 | 9,569 | 9,569 |
| 2006 | $31,003 | 17,581 | 17,581 |
| 2007 | $84,441 | 38,997 | 38,997 |
| 2008 | $135,083 | 87,247 | 87,247 |
| 2009 | $155,652 | 155,215 | 155,215 |
| 2010 | $159,698 | 110,821 | 110,821 |
Note: Quantity represents Weight in kilograms
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