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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $416,335,000 | 10,279,783 | 10,279,783 |
| 2006 | $411,160,000 | 9,829,917 | 9,829,917 |
| 2007 | $464,746,000 | 9,860,679 | 9,860,679 |
| 2008 | $518,056,000 | 9,171,714 | 9,171,714 |
| 2009 | $445,605,000 | 7,613,878 | 7,613,878 |
| 2010 | $463,010,940 | 7,507,279 | 7,507,279 |
| 2011 | $552,456,089 | 7,835,978 | 7,835,978 |
Note: Quantity represents Weight in kilograms
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