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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $300,205,331 | 599,532,609 | 599,532,609 |
| 2006 | $288,724,023 | 539,467,104 | 539,467,104 |
| 2007 | $452,684,799 | 571,192,549 | 571,192,549 |
| 2008 | $793,618,442 | 691,856,928 | 691,856,928 |
| 2009 | $481,789,492 | 525,491,769 | 525,491,769 |
| 2010 | $665,045,408 | 654,842,397 | 654,842,397 |
| 2011 | $805,076,514 | 629,746,558 | 629,746,558 |
Note: Quantity represents Weight in kilograms
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