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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $772,819,270 | 1,198,718 | 1,198,718 |
| 2006 | $946,460,397 | 1,018,555 | 1,018,555 |
| 2007 | $780,219,963 | 1,037,250 | 1,037,250 |
| 2008 | $709,309,416 | 817,027 | 817,027 |
| 2009 | $543,289,140 | 758,157 | 758,157 |
| 2010 | $432,168,110 | 621,108 | 621,108 |
| 2011 | $244,356,986 | 775,996 | 775,996 |
Note: Quantity represents Weight in kilograms
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