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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $220,472,788 | 503,445,156 | 503,445,156 |
| 2006 | $234,105,544 | 527,058,422 | 527,058,422 |
| 2007 | $321,644,937 | 572,804,079 | 572,804,079 |
| 2008 | $362,970,247 | 587,699,204 | 587,699,204 |
| 2009 | $311,142,704 | 638,653,647 | 638,653,647 |
| 2010 | $357,371,007 | 715,518,458 | 715,518,458 |
| 2011 | $390,769,874 | 697,803,323 | 697,803,323 |
Note: Quantity represents Weight in kilograms
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