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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $11,317 | 1,252 | 1,252 |
| 2006 | $12,131 | 818 | 818 |
| 2007 | $16,676 | 1,156 | 1,156 |
| 2008 | $23,560 | 2,739 | 2,739 |
| 2009 | $28,588 | 2,163 | 2,163 |
| 2010 | $26,007 | 2,294 | 2,294 |
| 2011 | $30,979 | 8,091 | 8,091 |
Note: Quantity represents Weight in kilograms
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