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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,282,697,688 | 8,591,998 | 8,591,998 |
| 2006 | $1,530,507,478 | 7,515,788 | 7,515,788 |
| 2007 | $155,861,549 | 1,032,605 | 1,032,605 |
| 2008 | $145,541,476 | 706,007 | 706,007 |
| 2009 | $85,683,571 | 914,670 | 914,670 |
| 2010 | $23,574,620 | 263,448 | 263,448 |
| 2011 | $25,336,904 | 198,817 | 198,817 |
Note: Quantity represents Weight in kilograms
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