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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $65,790,600 | 394,394,399 | 394,394,399 |
| 2006 | $82,699,489 | 536,368,372 | 536,368,372 |
| 2007 | $149,297,879 | 569,189,758 | 569,189,758 |
| 2008 | $589,568,859 | 1,397,625,834 | 1,397,625,834 |
| 2009 | $276,330,855 | 1,136,294,115 | 1,136,294,115 |
| 2010 | $85,838,026 | 428,414,995 | 428,414,995 |
| 2011 | $298,468,324 | 835,815,585 | 835,815,585 |
Note: Quantity represents Weight in kilograms
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