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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $520 | 314 | 314 |
| 2006 | $8,562 | 3,218 | 3,218 |
| 2007 | $27,440 | 11,160 | 11,160 |
| 2008 | $26,114 | 7,340 | 7,340 |
| 2009 | $10,585 | 2,626 | 2,626 |
| 2010 | $7,500 | 1,486 | 1,486 |
| 2011 | $23,610 | 2,439 | 2,439 |
Note: Quantity represents Weight in kilograms
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