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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $13,020 | 4,350 | 4,350 |
| 2006 | $13,152 | 3,877 | 3,877 |
| 2007 | $12,743 | 4,365 | 4,365 |
| 2008 | $10,303 | 3,116 | 3,116 |
| 2009 | $13,904 | 4,023 | 4,023 |
| 2010 | $10,247 | 3,732 | 3,732 |
| 2011 | $12,057 | 3,097 | 3,097 |
Note: Quantity represents Weight in kilograms
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