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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $580 | 3 | 3 |
| 2006 | $283,816,779 | 777,800,848 | 777,800,848 |
| 2008 | $77,043,476 | 92,295,268 | 92,295,268 |
| 2009 | $217,154 | 237,631 | 237,631 |
| 2010 | $480,158 | 462,570 | 462,570 |
| 2011 | $5,665 | 647 | 647 |
Note: Quantity represents Weight in kilograms
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