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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,574 | 87 | 87 |
| 2006 | $1,905 | 536 | 536 |
| 2007 | $9,544 | 3,104 | 3,104 |
| 2008 | $3,678 | 3,899 | 3,899 |
| 2009 | $77,061 | 61,770 | 61,770 |
| 2010 | $33,883 | 36,704 | 36,704 |
| 2011 | $50,734 | 48,813 | 48,813 |
Note: Quantity represents Weight in kilograms
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