2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $200,000 $400,000 $600,000 $800,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $684,966 | 3,026,742 | 3,026,742 |
| 2006 | $686,660 | 2,863,151 | 2,863,151 |
| 2007 | $106,484 | 100,056 | 100,056 |
| 2008 | $90,643 | 54,703 | 54,703 |
| 2009 | $76,718 | 45,502 | 45,502 |
| 2010 | $79,214 | 62,207 | 62,207 |
| 2011 | $47,812 | 34,282 | 34,282 |
Note: Quantity represents Weight in kilograms
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