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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $330 | 2,630 | 2,630 |
| 2006 | $1,034 | 11,167 | 11,167 |
| 2007 | $1,785 | 25,563 | 25,563 |
| 2008 | $870 | 14,690 | 14,690 |
| 2009 | $500 | 13,636 | 13,636 |
| 2010 | $1,353 | 7,812 | 7,812 |
| 2011 | $656 | 3,804 | 3,804 |
Note: Quantity represents Weight in kilograms
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