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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,149,378,555 | 34,553,445 | 34,553,445 |
| 2006 | $847,072,860 | 33,161,686 | 33,161,686 |
| 2007 | $991,168,450 | 30,040,349 | 30,040,349 |
| 2008 | $1,079,430,403 | 33,933,019 | 33,933,019 |
| 2009 | $275,945,234 | 22,708,639 | 22,708,639 |
| 2010 | $489,570,657 | 31,029,398 | 31,029,398 |
| 2011 | $570,922,249 | 36,175,837 | 36,175,837 |
Note: Quantity represents Weight in kilograms
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