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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $588,768,893 | 833,416,825 | 833,416,825 |
| 2006 | $726,404,460 | 1,000,899,415 | 1,000,899,415 |
| 2007 | $855,322,438 | 941,718,996 | 941,718,996 |
| 2008 | $996,152,362 | 962,152,849 | 962,152,849 |
| 2009 | $375,451,618 | 481,889,424 | 481,889,424 |
| 2010 | $918,191,481 | 1,156,633,330 | 1,156,633,330 |
| 2011 | $1,549,530,849 | 1,678,758,260 | 1,678,758,260 |
Note: Quantity represents Weight in kilograms
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