2004 2005 2006 2008 2009 2010 2011 2012 $0 $200,000 $400,000 $600,000 $800,000 $1,000,000 $1,200,000 $1,400,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $454,000 | 367,300 | 367,300 |
| 2006 | $633,000 | 504,200 | 504,200 |
| 2008 | $1,236,000 | 693,500 | 693,500 |
| 2009 | $586,000 | 307,700 | 307,700 |
| 2010 | $507,000 | 290,000 | 290,000 |
| 2011 | $768,000 | 550,300 | 550,300 |
Note: Quantity represents Weight in kilograms
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