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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,800 | 943 | 943 |
| 2006 | $3,200 | 811 | 811 |
| 2007 | $68,800 | 58,613 | 58,613 |
| 2008 | $27,500 | 19,646 | 19,646 |
| 2009 | $2,100 | 70 | 70 |
| 2010 | $28,900 | 29,915 | 29,915 |
| 2011 | $214,100 | 173,705 | 173,705 |
Note: Quantity represents Weight in kilograms
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