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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $492,558,585 | 505,783,424 | 505,783,424 |
| 2006 | $589,434,724 | 607,003,619 | 607,003,619 |
| 2007 | $776,729,600 | 700,930,717 | 700,930,717 |
| 2008 | $815,900,354 | 657,235,306 | 657,235,306 |
| 2009 | $550,087,834 | 626,066,541 | 626,066,541 |
| 2010 | $781,553,484 | 725,256,135 | 725,256,135 |
| 2011 | $973,863,662 | 812,532,541 | 812,532,541 |
Note: Quantity represents Weight in kilograms
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