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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $52,300 | 32,737 | 32,737 |
| 2006 | $13,900 | 9,378 | 9,378 |
| 2007 | $73,400 | 39,240 | 39,240 |
| 2008 | $54,300 | 23,687 | 23,687 |
| 2009 | $35,500 | 17,580 | 17,580 |
| 2010 | $26,400 | 11,621 | 11,621 |
| 2011 | $13,900 | 5,425 | 5,425 |
Note: Quantity represents Weight in kilograms
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