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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $41,000 | 19,700 | 19,700 |
| 2006 | $32,000 | 30,300 | 30,300 |
| 2007 | $13,000 | 14,600 | 14,600 |
| 2008 | $21,000 | 12,400 | 12,400 |
| 2009 | $10,000 | 6,300 | 6,300 |
| 2010 | $6,000 | 5,800 | 5,800 |
| 2011 | $37,000 | 8,880 | 8,880 |
Note: Quantity represents Weight in kilograms
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