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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,243 | 1,097 | 1,097 |
| 2006 | $12,016 | 22,565 | 22,565 |
| 2007 | $3,219 | 845 | 845 |
| 2008 | $1,025 | 1,023 | 1,023 |
| 2009 | $26,312 | 25,970 | 25,970 |
| 2010 | $12,640 | 261 | 261 |
| 2011 | $17,570 | 17,504 | 17,504 |
Note: Quantity represents Weight in kilograms
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