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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $139,465 | 23,581 | 23,581 |
| 2006 | $142,604 | 42,782 | 42,782 |
| 2007 | $143,496 | 23,534 | 23,534 |
| 2008 | $146,653 | 33,706 | 33,706 |
| 2009 | $148,146 | 27,534 | 27,534 |
| 2010 | $203,603 | 37,552 | 37,552 |
Note: Quantity represents Weight in kilograms
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