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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $280,122,006 | 320,539,187 | 320,539,187 |
| 2006 | $524,234,951 | 646,761,657 | 646,761,657 |
| 2007 | $505,362,150 | 622,452,854 | 622,452,854 |
| 2008 | $727,484,080 | 705,101,515 | 705,101,515 |
| 2009 | $356,023,732 | 286,274,460 | 286,274,460 |
| 2010 | $437,522,934 | 452,209,911 | 452,209,911 |
| 2011 | $882,278,808 | 789,008,215 | 789,008,215 |
Note: Quantity represents Weight in kilograms
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