2004 2005 2006 2007 2008 2009 2010 2011 $0 $200 $400 $600 $800 $1,000 $1,200 $1,400
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,132 | 1,135 | 1,135 |
| 2006 | $806 | 867 | 867 |
| 2007 | $689 | 775 | 775 |
| 2008 | $1,211 | 1,200 | 1,200 |
| 2009 | $1,038 | 2,144 | 2,144 |
| 2010 | $306 | 1,172 | 1,172 |
Note: Quantity represents Weight in kilograms
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