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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $39,000 | 27,500 | 27,500 |
| 2006 | $50,000 | 47,400 | 47,400 |
| 2007 | $36,000 | 31,800 | 31,800 |
| 2008 | $118,000 | 79,700 | 79,700 |
| 2009 | $182,000 | 183,200 | 183,200 |
| 2010 | $79,000 | 104,300 | 104,300 |
| 2011 | $17,000 | 16,300 | 16,300 |
Note: Quantity represents Weight in kilograms
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