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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $63,223 | 8,288 | 8,288 |
| 2006 | $59,113 | 7,806 | 7,806 |
| 2007 | $53,176 | 7,985 | 7,985 |
| 2008 | $50,773 | 5,610 | 5,610 |
| 2009 | $62,107 | 7,507 | 7,507 |
| 2010 | $60,738 | 6,281 | 6,281 |
| 2011 | $54,429 | 5,512 | 5,512 |
Note: Quantity represents Weight in kilograms
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