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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $513,109,703 | 15,046,378 | 15,046,378 |
| 2006 | $563,861,876 | 17,159,740 | 17,159,740 |
| 2007 | $580,896,930 | 20,060,278 | 20,060,278 |
| 2008 | $646,163,724 | 18,538,510 | 18,538,510 |
| 2009 | $477,004,816 | 11,452,928 | 11,452,928 |
| 2010 | $477,597,647 | 15,875,781 | 15,875,781 |
Note: Quantity represents Weight in kilograms
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