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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $14,000 | 89,387 | 89,387 |
| 2006 | $14,000 | 87,500 | 87,500 |
| 2007 | $17,900 | 85,780 | 85,780 |
| 2008 | $23,800 | 69,671 | 69,671 |
| 2009 | $15,800 | 57,520 | 57,520 |
| 2010 | $13,300 | 41,860 | 41,860 |
| 2011 | $2,200 | 6,800 | 6,800 |
Note: Quantity represents Weight in kilograms
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