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 | $40,299 | 13,963 | 13,963 |
| 2006 | $56,708 | 14,766 | 14,766 |
| 2007 | $22,245 | 5,288 | 5,288 |
| 2008 | $1,038,667 | 331,499 | 331,499 |
| 2009 | $915,863 | 246,018 | 246,018 |
| 2010 | $773,110 | 261,883 | 261,883 |
| 2011 | $418,494 | 145,087 | 145,087 |
Note: Quantity represents Weight in kilograms
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