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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $33,638 | 13,037 | 13,037 |
| 2006 | $46,522 | 16,372 | 16,372 |
| 2007 | $47,993 | 16,698 | 16,698 |
| 2008 | $88,627 | 23,464 | 23,464 |
| 2009 | $61,361 | 18,121 | 18,121 |
| 2010 | $83,921 | 21,564 | 21,564 |
| 2011 | $47,249 | 8,288 | 8,288 |
Note: Quantity represents Weight in kilograms
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