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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,593 | 907 | 907 |
| 2006 | $28,336 | 7,209 | 7,209 |
| 2007 | $30,787 | 3,164 | 3,164 |
| 2008 | $94,052 | 20,507 | 20,507 |
| 2009 | $83,244 | 13,367 | 13,367 |
| 2010 | $60,669 | 9,548 | 9,548 |
| 2011 | $22,741 | 4,078 | 4,078 |
Note: Quantity represents Weight in kilograms
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