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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,463 | 842 | 842 |
| 2006 | $12,810 | 3,991 | 3,991 |
| 2007 | $73,262 | 13,176 | 13,176 |
| 2008 | $47,592 | 17,072 | 17,072 |
| 2009 | $41,912 | 13,050 | 13,050 |
| 2010 | $136,077 | 27,103 | 27,103 |
| 2011 | $181,761 | 29,336 | 29,336 |
Note: Quantity represents Weight in kilograms
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