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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $376,576,000 | 28,274,251 | 28,274,251 |
| 2006 | $390,898,000 | 27,956,530 | 27,956,530 |
| 2007 | $411,769,000 | 27,177,622 | 27,177,622 |
| 2008 | $397,735,000 | 25,451,480 | 25,451,480 |
| 2009 | $266,510,000 | 18,914,284 | 18,914,284 |
| 2010 | $319,632,434 | 23,355,024 | 23,355,024 |
| 2011 | $365,576,723 | 25,358,436 | 25,358,436 |
Note: Quantity represents Weight in kilograms
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