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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,400 | 10,558 | 10,558 |
| 2006 | $9,300 | 9,778 | 9,778 |
| 2007 | $8,200 | 6,378 | 6,378 |
| 2008 | $16,700 | 10,752 | 10,752 |
| 2009 | $8,600 | 5,910 | 5,910 |
| 2010 | $8,200 | 3,909 | 3,909 |
| 2011 | $24,700 | 11,580 | 11,580 |
Note: Quantity represents Weight in kilograms
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