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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,541 | 886 | 886 |
| 2006 | $8,177 | 3,718 | 3,718 |
| 2007 | $12,209 | 5,437 | 5,437 |
| 2008 | $48,478 | 22,934 | 22,934 |
| 2009 | $14,750 | 9,061 | 9,061 |
| 2010 | $10,141 | 3,961 | 3,961 |
| 2011 | $9,353 | 4,144 | 4,144 |
Note: Quantity represents Weight in kilograms
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