2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $500,000 $1,000,000 $1,500,000 $2,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $54,600 | 423,698 | 423,698 |
| 2006 | $56,000 | 507,903 | 507,903 |
| 2007 | $89,000 | 771,059 | 771,059 |
| 2008 | $206,100 | 1,001,613 | 1,001,613 |
| 2009 | $851,400 | 7,111,136 | 7,111,136 |
| 2010 | $1,661,600 | 10,291,306 | 10,291,306 |
| 2011 | $996,600 | 5,249,431 | 5,249,431 |
Note: Quantity represents Weight in kilograms
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