2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $200,000 $400,000 $600,000 $800,000 $1,000,000 $1,200,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $88,423 | 127,969 | 127,969 |
| 2006 | $181,567 | 256,768 | 256,768 |
| 2007 | $668,633 | 156,556 | 156,556 |
| 2008 | $919,707 | 226,189 | 226,189 |
| 2009 | $113,435 | 43,555 | 43,555 |
| 2010 | $237,172 | 111,065 | 111,065 |
| 2011 | $682,607 | 380,720 | 380,720 |
Note: Quantity represents Weight in kilograms
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