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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $27,997 | 1,079 | 1,079 |
| 2006 | $24,169 | 500 | 500 |
| 2007 | $21,618 | 415 | 415 |
| 2008 | $23,516 | 1,724 | 1,724 |
| 2009 | $31,610 | 2,653 | 2,653 |
| 2010 | $21,727 | 2,061 | 2,061 |
| 2011 | $45,552 | 4,487 | 4,487 |
Note: Quantity represents Weight in kilograms
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