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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,266 | 19,820 | 19,820 |
| 2006 | $2,517 | 40,160 | 40,160 |
| 2007 | $923 | 14,960 | 14,960 |
| 2008 | $4,317 | 56,620 | 56,620 |
| 2009 | $2,260 | 32,520 | 32,520 |
| 2010 | $2,108 | 30,580 | 30,580 |
| 2011 | $2,339 | 31,180 | 31,180 |
Note: Quantity represents Weight in kilograms
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