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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $724,117,719 | 1,482,115,556 | 1,482,115,556 |
| 2006 | $793,975,864 | 1,464,365,786 | 1,464,365,786 |
| 2007 | $897,204,405 | 1,492,708,767 | 1,492,708,767 |
| 2008 | $1,006,382,860 | 1,429,252,095 | 1,429,252,095 |
| 2009 | $699,322,355 | 1,414,818,779 | 1,414,818,779 |
| 2010 | $1,127,364,029 | 1,550,208,577 | 1,550,208,577 |
| 2011 | $1,002,364,274 | 1,486,424,572 | 1,486,424,572 |
Note: Quantity represents Weight in kilograms
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