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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $411,553,977 | 448,811,331 | 448,811,331 |
| 2006 | $395,533,995 | 458,511,969 | 458,511,969 |
| 2007 | $336,665,329 | 362,598,643 | 362,598,643 |
| 2008 | $408,870,836 | 329,875,092 | 329,875,092 |
| 2009 | $347,419,165 | 323,733,000 | 323,733,000 |
| 2010 | $374,372,199 | 318,876,751 | 318,876,751 |
| 2011 | $397,684,742 | 313,108,757 | 313,108,757 |
Note: Quantity represents Weight in kilograms
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