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 | $571,632 | 6,042 | 6,042 |
| 2006 | $558,394 | 4,506 | 4,506 |
| 2007 | $671,652 | 3,344 | 3,344 |
| 2008 | $656,544 | 4,035 | 4,035 |
| 2009 | $531,747 | 3,035 | 3,035 |
| 2010 | $633,673 | 3,182 | 3,182 |
| 2011 | $721,579 | 3,216 | 3,216 |
Note: Quantity represents Weight in kilograms
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