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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $419,633,640 | 23,684,738 | 23,684,738 |
| 2006 | $413,037,855 | 18,785,653 | 18,785,653 |
| 2007 | $424,018,526 | 17,005,255 | 17,005,255 |
| 2008 | $395,109,182 | 13,831,645 | 13,831,645 |
| 2009 | $285,868,041 | 10,612,287 | 10,612,287 |
| 2010 | $362,669,661 | 13,951,795 | 13,951,795 |
| 2011 | $382,943,767 | 15,249,337 | 15,249,337 |
Note: Quantity represents Weight in kilograms
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