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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $82 | 248 | 248 |
| 2006 | $60 | 28 | 28 |
| 2007 | $848,870 | 20,512,661 | 20,512,661 |
| 2008 | $4,289,901 | 139,200,552 | 139,200,552 |
| 2009 | $2,307,354 | 52,700,379 | 52,700,379 |
| 2010 | $3,851,807 | 108,031,259 | 108,031,259 |
| 2011 | $44,833,043 | 2,192,791,351 | 2,192,791,351 |
Note: Quantity represents Weight in kilograms
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