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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $641,945,000 | 164,316,912 | 164,316,912 |
| 2006 | $640,605,000 | 144,895,200 | 144,895,200 |
| 2007 | $724,489,000 | 147,555,415 | 147,555,415 |
| 2008 | $800,014,000 | 141,923,200 | 141,923,200 |
| 2009 | $638,911,000 | 124,814,326 | 124,814,326 |
| 2010 | $689,525,399 | 160,804,754 | 160,804,754 |
| 2011 | $811,309,116 | 169,660,840 | 169,660,840 |
Note: Quantity represents Weight in kilograms
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