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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $18,370 | 12,106 | 12,106 |
| 2006 | $59,900 | 22,152 | 22,152 |
| 2007 | $34,618 | 16,192 | 16,192 |
| 2008 | $54,814 | 24,574 | 24,574 |
| 2009 | $22,080 | 6,754 | 6,754 |
| 2010 | $55,674 | 14,768 | 14,768 |
| 2011 | $107,750 | 35,170 | 35,170 |
Note: Quantity represents Weight in kilograms
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