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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $11,522 | 1,000 | 1,000 |
| 2006 | $1,765 | 2,109 | 2,109 |
| 2007 | $297 | 283 | 283 |
| 2008 | $87,459 | 24,000 | 24,000 |
| 2010 | $376,379,356 | 348,746,000 | 348,746,000 |
| 2011 | $815,184,032 | 861,845,912 | 861,845,912 |
Note: Quantity represents Weight in kilograms
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