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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $21 | 299 | 299 |
| 2006 | $1,183 | 14,400 | 14,400 |
| 2007 | $2,117 | 24,000 | 24,000 |
| 2008 | $614 | 12,520 | 12,520 |
| 2009 | $498 | 8,520 | 8,520 |
| 2010 | $6,812 | 58,880 | 58,880 |
| 2011 | $38,757 | 279,425 | 279,425 |
Note: Quantity represents Weight in kilograms
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