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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $37,863 | 4,131 | 4,131 |
| 2006 | $31,569 | 4,202 | 4,202 |
| 2007 | $32,731 | 4,985 | 4,985 |
| 2008 | $23,619 | 3,106 | 3,106 |
| 2009 | $20,814 | 3,431 | 3,431 |
| 2010 | $16,452 | 2,593 | 2,593 |
| 2011 | $12,419 | 1,754 | 1,754 |
Note: Quantity represents Weight in kilograms
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