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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,834 | 363 | 363 |
| 2006 | $3,741 | 173 | 173 |
| 2007 | $5,615 | 19,460 | 19,460 |
| 2008 | $3,489 | 4,358 | 4,358 |
| 2009 | $2,707 | 8,308 | 8,308 |
| 2010 | $12,662 | 32,547 | 32,547 |
| 2011 | $5,106 | 15,936 | 15,936 |
Note: Quantity represents Weight in kilograms
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