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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $405,270,655 | 181,199,048 | 181,199,048 |
| 2006 | $437,338,037 | 174,428,718 | 174,428,718 |
| 2007 | $471,123,373 | 187,070,700 | 187,070,700 |
| 2008 | $593,762,818 | 255,200,636 | 255,200,636 |
| 2009 | $613,110,511 | 224,278,773 | 224,278,773 |
| 2010 | $710,904,902 | 250,249,893 | 250,249,893 |
| 2011 | $767,554,214 | 255,375,482 | 255,375,482 |
Note: Quantity represents Weight in kilograms
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