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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $41,000 | 42,108 | 42,108 |
| 2006 | $33,925 | 33,480 | 33,480 |
| 2007 | $101,199 | 50,289 | 50,289 |
| 2008 | $284,699 | 114,362 | 114,362 |
| 2009 | $229,845 | 96,586 | 96,586 |
| 2010 | $84,389 | 76,784 | 76,784 |
| 2011 | $130,816 | 93,048 | 93,048 |
Note: Quantity represents Weight in kilograms
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