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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $839 | 1,090 | 1,090 |
| 2006 | $149 | 497 | 497 |
| 2007 | $8,669 | 12,610 | 12,610 |
| 2008 | $6,610 | 13,240 | 13,240 |
| 2009 | $5,646 | 2,734 | 2,734 |
| 2010 | $27,790 | 31,409 | 31,409 |
| 2011 | $9,047 | 7,209 | 7,209 |
Note: Quantity represents Weight in kilograms
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