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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $380,691,141 | 62,091 | 62,091 |
| 2006 | $371,123,713 | 146,147 | 146,147 |
| 2007 | $255,416,208 | 52,661 | 52,661 |
| 2008 | $115,378,642 | 12,993 | 12,993 |
| 2009 | $6,893,306 | 1,783 | 1,783 |
| 2010 | $10,008 | 7 | 7 |
| 2011 | $1,601 | 3 | 3 |
Note: Quantity represents Weight in kilograms
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