2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $500 $1,000 $1,500 $2,000 $2,500
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,934 | 446 | 446 |
| 2006 | $333 | 53 | 53 |
| 2007 | $660 | 117 | 117 |
| 2008 | $2,051 | 236 | 236 |
| 2009 | $2,085 | 510 | 510 |
| 2010 | $2,200 | 300 | 300 |
| 2011 | $641 | 154 | 154 |
Note: Quantity represents Weight in kilograms
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