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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $580,175,400 | 480,284,002 | 480,284,002 |
| 2006 | $653,210,139 | 513,105,356 | 513,105,356 |
| 2007 | $886,082,230 | 660,482,343 | 660,482,343 |
| 2008 | $915,252,310 | 666,858,254 | 666,858,254 |
| 2009 | $425,078,878 | 523,958,720 | 523,958,720 |
| 2010 | $776,470,694 | 655,370,793 | 655,370,793 |
| 2011 | $868,443,177 | 616,955,137 | 616,955,137 |
Note: Quantity represents Weight in kilograms
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