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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,494 | 8,161 | 8,161 |
| 2006 | $6,549 | 6,316 | 6,316 |
| 2007 | $14,349 | 13,400 | 13,400 |
| 2008 | $5,452 | 4,300 | 4,300 |
| 2009 | $10,311 | 9,650 | 9,650 |
| 2010 | $6,466 | 6,700 | 6,700 |
| 2011 | $4,763 | 4,900 | 4,900 |
Note: Quantity represents Weight in kilograms
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