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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $148,726,000 | 30,352,700 | 0 |
| 2006 | $123,181,000 | 22,521,383 | 0 |
| 2007 | $123,396,000 | 14,568,800 | 0 |
| 2008 | $103,157,000 | 10,286,700 | 306,454,486 |
| 2009 | $79,011,000 | 10,419,459 | 224,226,786 |
| 2010 | $70,949,000 | 8,341,335 | 0 |
| 2011 | $65,853,000 | 7,447,952 | 0 |
Note: Quantity represents No Quantity
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