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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $27,700 | 16,979 | 16,979 |
| 2006 | $32,600 | 11,544 | 11,544 |
| 2007 | $36,000 | 5,628 | 5,628 |
| 2008 | $70,700 | 16,381 | 16,381 |
| 2009 | $64,500 | 17,592 | 17,592 |
| 2010 | $61,800 | 18,248 | 18,248 |
| 2011 | $214,200 | 196,750 | 196,750 |
Note: Quantity represents Weight in kilograms
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