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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $682,502,628 | 215,897,730 | 215,897,730 |
| 2006 | $733,457,839 | 236,466,387 | 236,466,387 |
| 2007 | $763,211,777 | 239,792,241 | 239,792,241 |
| 2008 | $628,332,862 | 164,692,285 | 164,692,285 |
| 2009 | $660,273,802 | 169,333,780 | 169,333,780 |
| 2010 | $884,022,948 | 228,568,000 | 228,568,000 |
| 2011 | $1,193,686,439 | 273,030,944 | 273,030,944 |
Note: Quantity represents Weight in kilograms
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