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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $106,372,200 | 707,148,776 | 707,148,776 |
| 2006 | $136,457,800 | 3,031,002,847 | 3,031,002,847 |
| 2007 | $276,612,679 | 205,434,551 | 205,434,551 |
| 2008 | $165,366,766 | 219,486,268 | 219,486,268 |
| 2009 | $153,255,192 | 184,660,372 | 184,660,372 |
| 2010 | $165,690,046 | 241,124,209 | 241,124,209 |
| 2011 | $200,921,465 | 219,304,269 | 219,304,269 |
Note: Quantity represents Weight in kilograms
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