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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $9,942 | 9,228 | 9,228 |
| 2006 | $9,838 | 8,942 | 8,942 |
| 2007 | $10,366 | 9,644 | 9,644 |
| 2008 | $29,219 | 50,549 | 50,549 |
| 2009 | $25,331 | 21,406 | 21,406 |
| 2010 | $12,764 | 10,160 | 10,160 |
| 2011 | $13,911 | 9,402 | 9,402 |
Note: Quantity represents Weight in kilograms
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