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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,676,226 | 15,702,406 | 15,702,406 |
| 2006 | $8,835,982 | 11,782,548 | 11,782,548 |
| 2007 | $44,002,545 | 43,887,486 | 43,887,486 |
| 2008 | $296,322,889 | 263,584,518 | 263,584,518 |
| 2009 | $116,215,280 | 121,555,871 | 121,555,871 |
| 2010 | $171,788,663 | 176,424,949 | 176,424,949 |
| 2011 | $492,412,676 | 316,774,700 | 316,774,700 |
Note: Quantity represents Weight in kilograms
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