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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,098 | 648 | 648 |
| 2006 | $764 | 250 | 250 |
| 2007 | $6,065 | 5,461 | 5,461 |
| 2008 | $20,662 | 17,791 | 17,791 |
| 2009 | $32,624 | 61,321 | 61,321 |
| 2010 | $27,128 | 29,189 | 29,189 |
| 2011 | $13,831 | 5,531 | 5,531 |
Note: Quantity represents Weight in kilograms
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