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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,004 | 3,118 | 3,118 |
| 2006 | $3,594 | 2,491 | 2,491 |
| 2007 | $2,140 | 1,739 | 1,739 |
| 2008 | $2,581 | 2,602 | 2,602 |
| 2009 | $2,308 | 4,511 | 4,511 |
| 2010 | $4,573 | 4,320 | 4,320 |
| 2011 | $6,865 | 7,112 | 7,112 |
Note: Quantity represents Weight in kilograms
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