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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $625,203,000 | 20,324,290 | 20,324,290 |
| 2006 | $634,868,000 | 20,957,533 | 20,957,533 |
| 2007 | $782,854,000 | 24,138,286 | 24,138,286 |
| 2008 | $1,249,914,000 | 29,936,475 | 29,936,475 |
| 2009 | $1,318,186,000 | 29,206,299 | 29,206,299 |
| 2010 | $1,146,848,260 | 30,192,335 | 30,192,335 |
| 2011 | $1,215,723,751 | 31,424,014 | 31,424,014 |
Note: Quantity represents Weight in kilograms
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