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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,005 | 333 | 333 |
| 2006 | $13,841 | 317 | 317 |
| 2007 | $43,213 | 1,118 | 1,118 |
| 2008 | $45,020 | 1,047 | 1,047 |
| 2009 | $56,217 | 1,472 | 1,472 |
| 2010 | $119,157 | 3,868 | 3,868 |
| 2011 | $108,729 | 3,041 | 3,041 |
Note: Quantity represents Weight in kilograms
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