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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $17,000 | 20,400 | 20,400 |
| 2006 | $13,000 | 19,580 | 19,580 |
| 2007 | $28,800 | 38,964 | 38,964 |
| 2008 | $27,700 | 27,060 | 27,060 |
| 2009 | $47,400 | 45,500 | 45,500 |
| 2010 | $67,300 | 81,152 | 81,152 |
| 2011 | $78,600 | 72,609 | 72,609 |
Note: Quantity represents Weight in kilograms
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