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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $545,581,994 | 286,885,215 | 286,885,215 |
| 2006 | $664,868,728 | 294,861,366 | 294,861,366 |
| 2007 | $870,308,529 | 302,914,156 | 302,914,156 |
| 2008 | $960,865,841 | 291,976,985 | 291,976,985 |
| 2009 | $686,271,986 | 291,314,498 | 291,314,498 |
| 2010 | $804,458,448 | 324,548,474 | 324,548,474 |
| 2011 | $696,510,390 | 293,679,130 | 293,679,130 |
Note: Quantity represents Weight in kilograms
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