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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $13,565 | 1,820 | 1,820 |
| 2006 | $19,773 | 2,285 | 2,285 |
| 2007 | $26,065 | 2,112 | 2,112 |
| 2008 | $37,751 | 2,796 | 2,796 |
| 2009 | $29,196 | 1,927 | 1,927 |
| 2010 | $26,852 | 2,307 | 2,307 |
| 2011 | $25,388 | 2,218 | 2,218 |
Note: Quantity represents Weight in kilograms
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