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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,165 | 3,281 | 3,281 |
| 2006 | $3,065 | 8,502 | 8,502 |
| 2007 | $1,877 | 3,881 | 3,881 |
| 2008 | $2,869 | 4,476 | 4,476 |
| 2009 | $2,328 | 2,040 | 2,040 |
| 2010 | $1,748 | 3,118 | 3,118 |
| 2011 | $8,331 | 24,787 | 24,787 |
Note: Quantity represents Weight in kilograms
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