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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $261,106,269 | 513,869,403 | 513,869,403 |
| 2006 | $272,354,782 | 464,597,460 | 464,597,460 |
| 2007 | $373,759,280 | 481,465,850 | 481,465,850 |
| 2008 | $443,411,633 | 423,422,220 | 423,422,220 |
| 2009 | $306,338,315 | 449,613,655 | 449,613,655 |
Note: Quantity represents Weight in kilograms
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