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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,100 | 379 | 379 |
| 2006 | $19,200 | 2,337 | 2,337 |
| 2007 | $44,600 | 854 | 854 |
| 2008 | $81,500 | 1,429 | 1,429 |
| 2009 | $89,700 | 1,621 | 1,621 |
| 2010 | $232,400 | 5,113 | 5,113 |
| 2011 | $276,500 | 8,129 | 8,129 |
Note: Quantity represents Weight in kilograms
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