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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $35,064 | 23,398 | 23,398 |
| 2006 | $60,977 | 57,569 | 57,569 |
| 2007 | $34,611 | 24,125 | 24,125 |
| 2008 | $45,581 | 23,226 | 23,226 |
| 2009 | $37,962 | 19,416 | 19,416 |
| 2010 | $62,757 | 44,369 | 44,369 |
| 2011 | $12,279 | 7,276 | 7,276 |
Note: Quantity represents Weight in kilograms
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