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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $22,780 | 8,718 | 8,718 |
| 2006 | $25,676 | 9,353 | 9,353 |
| 2007 | $16,633 | 3,326 | 3,326 |
| 2008 | $14,504 | 4,167 | 4,167 |
| 2009 | $11,296 | 2,011 | 2,011 |
| 2010 | $10,073 | 3,364 | 3,364 |
| 2011 | $8,814 | 2,451 | 2,451 |
Note: Quantity represents Weight in kilograms
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