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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $26,262 | 10,926 | 10,926 |
| 2006 | $60,787 | 10,698 | 10,698 |
| 2007 | $121,236 | 21,019 | 21,019 |
| 2008 | $153,198 | 29,086 | 29,086 |
| 2009 | $120,897 | 22,887 | 22,887 |
| 2010 | $243,612 | 31,690 | 31,690 |
| 2011 | $357,351 | 40,172 | 40,172 |
Note: Quantity represents Weight in kilograms
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