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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $41,219 | 1,340 | 1,340 |
| 2006 | $52,794 | 1,862 | 1,862 |
| 2007 | $60,880 | 2,236 | 2,236 |
| 2008 | $48,311 | 1,398 | 1,398 |
| 2009 | $51,153 | 1,811 | 1,811 |
| 2010 | $69,656 | 2,512 | 2,512 |
| 2011 | $83,504 | 2,946 | 2,946 |
Note: Quantity represents Weight in kilograms
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