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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $30,019 | 31,237 | 31,237 |
| 2006 | $24,038 | 29,948 | 29,948 |
| 2007 | $18,479 | 26,666 | 26,666 |
| 2008 | $25,069 | 20,237 | 20,237 |
| 2009 | $42,451 | 28,715 | 28,715 |
| 2010 | $30,156 | 20,790 | 20,790 |
| 2011 | $9,276 | 6,055 | 6,055 |
Note: Quantity represents Weight in kilograms
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