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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $483,709,196 | 268,491,528 | 268,491,528 |
| 2006 | $623,325,623 | 258,745,236 | 258,745,236 |
| 2008 | $467,418,086 | 178,682,175 | 178,682,175 |
| 2009 | $262,149,608 | 163,096,481 | 163,096,481 |
| 2010 | $272,549,459 | 77,006,959 | 77,006,959 |
| 2011 | $132,811,466 | 58,004,589 | 58,004,589 |
Note: Quantity represents Weight in kilograms
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