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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $294,183,458 | 472,144,400 | 472,144,400 |
| 2006 | $339,677,152 | 491,894,300 | 491,894,300 |
| 2007 | $416,731,594 | 473,906,100 | 473,906,100 |
| 2008 | $476,513,437 | 488,412,957 | 488,412,957 |
| 2009 | $497,057,865 | 555,763,721 | 555,763,721 |
| 2010 | $469,267,720 | 546,496,500 | 546,496,500 |
| 2011 | $525,033,575 | 516,849,300 | 516,849,300 |
Note: Quantity represents Weight in kilograms
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