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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,280 | 5,076 | 5,076 |
| 2006 | $10,069 | 17,660 | 17,660 |
| 2007 | $18,751 | 48,883 | 48,883 |
| 2008 | $63,022 | 107,161 | 107,161 |
| 2009 | $68,582 | 229,735 | 229,735 |
| 2010 | $94,387 | 200,981 | 200,981 |
| 2011 | $17,915 | 6,850 | 6,850 |
Note: Quantity represents Weight in kilograms
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