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| Year | Trade Value | Weight (kg) | Quantity |
| 2007 | $37 | 107 | 107 |
| 2008 | $156,426,586 | 359,534,600 | 359,534,600 |
| 2009 | $34,699,630 | 138,114,200 | 138,114,200 |
| 2010 | $85,408,962 | 279,529,164 | 279,529,164 |
| 2011 | $928,449 | 874,888 | 874,888 |
Note: Quantity represents Weight in kilograms
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