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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $21,200 | 1,136 | 1,136 |
| 2006 | $12,500 | 822 | 822 |
| 2007 | $41,600 | 7,035 | 7,035 |
| 2008 | $48,800 | 4,173 | 4,173 |
| 2009 | $85,600 | 18,943 | 18,943 |
| 2010 | $30,900 | 3,776 | 3,776 |
| 2011 | $27,200 | 2,378 | 2,378 |
Note: Quantity represents Weight in kilograms
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