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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $36,000 | 24,100 | 24,100 |
| 2006 | $58,000 | 30,500 | 30,500 |
| 2007 | $103,000 | 42,600 | 42,600 |
| 2008 | $87,000 | 39,900 | 39,900 |
| 2009 | $46,000 | 24,600 | 24,600 |
| 2010 | $37,000 | 17,300 | 17,300 |
| 2011 | $13,000 | 4,700 | 4,700 |
Note: Quantity represents Weight in kilograms
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