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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $49,170,568 | 384,036,200 | 384,036,200 |
| 2006 | $30,710,363 | 188,641,543 | 188,641,543 |
| 2007 | $56,456,680 | 207,045,186 | 207,045,186 |
| 2008 | $209,242,890 | 728,756,308 | 728,756,308 |
| 2009 | $215,988,847 | 1,024,811,597 | 1,024,811,597 |
| 2010 | $233,108,260 | 1,013,028,334 | 1,013,028,334 |
| 2011 | $143,621,031 | 461,644,024 | 461,644,024 |
Note: Quantity represents Weight in kilograms
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