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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,557 | 506 | 506 |
| 2006 | $1,699 | 475 | 475 |
| 2007 | $17,367 | 138,702 | 138,702 |
| 2008 | $18,481 | 308,919 | 308,919 |
| 2009 | $51,356 | 126,270 | 126,270 |
| 2010 | $16,378 | 230,039 | 230,039 |
| 2011 | $8,912 | 760,249 | 760,249 |
Note: Quantity represents Weight in kilograms
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