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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $575,000 | 1,145,600 | 1,145,600 |
| 2006 | $477,000 | 826,200 | 826,200 |
| 2007 | $219,000 | 379,400 | 379,400 |
| 2008 | $98,000 | 140,300 | 140,300 |
| 2009 | $20,000 | 15,100 | 15,100 |
| 2010 | $233,000 | 335,600 | 335,600 |
| 2011 | $11,000 | 4,700 | 4,700 |
Note: Quantity represents Weight in kilograms
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