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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $165,533,350 | 2,828,910,067 | 2,828,910,067 |
| 2006 | $249,078,389 | 3,336,658,343 | 3,336,658,343 |
| 2007 | $350,391,699 | 3,184,703,947 | 3,184,703,947 |
| 2008 | $470,253,689 | 2,921,428,328 | 2,921,428,328 |
| 2009 | $190,443,054 | 2,526,092,967 | 2,526,092,967 |
| 2010 | $295,107,873 | 2,252,078,327 | 2,252,078,327 |
| 2011 | $364,842,660 | 2,373,816,706 | 2,373,816,706 |
Note: Quantity represents Weight in kilograms
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