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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $9,012 | 886 | 886 |
| 2006 | $10,814 | 4,487 | 4,487 |
| 2007 | $11,603 | 15,466 | 15,466 |
| 2008 | $10,289 | 21,062 | 21,062 |
| 2009 | $13,627 | 6,691 | 6,691 |
| 2010 | $5,718 | 5,307 | 5,307 |
| 2011 | $26,312 | 21,984 | 21,984 |
Note: Quantity represents Weight in kilograms
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