2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $100,000 $200,000 $300,000 $400,000 $500,000 $600,000 $700,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $275,525 | 171,174 | 171,174 |
| 2006 | $232,832 | 129,687 | 129,687 |
| 2007 | $564,115 | 308,444 | 308,444 |
| 2008 | $177,145 | 86,240 | 86,240 |
| 2009 | $73,092 | 36,544 | 36,544 |
| 2010 | $82,565 | 41,780 | 41,780 |
| 2011 | $171,830 | 86,355 | 86,355 |
Note: Quantity represents Weight in kilograms
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