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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $320,055,626 | 1,524,320,335 | 1,524,320,335 |
| 2006 | $270,762,645 | 1,755,871,200 | 1,755,871,200 |
| 2007 | $300,493,807 | 1,068,392,900 | 1,068,392,900 |
| 2008 | $697,802,180 | 1,310,068,000 | 1,310,068,000 |
| 2009 | $202,125,373 | 647,350,000 | 647,350,000 |
| 2010 | $242,269,267 | 664,328,835 | 664,328,835 |
| 2011 | $427,514,121 | 908,810,200 | 908,810,200 |
Note: Quantity represents Weight in kilograms
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