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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $30,200 | 2,369 | 2,369 |
| 2006 | $41,300 | 1,392 | 1,392 |
| 2007 | $50,900 | 1,359 | 1,359 |
| 2008 | $46,600 | 2,178 | 2,178 |
| 2009 | $40,700 | 1,847 | 1,847 |
| 2010 | $37,200 | 1,180 | 1,180 |
| 2011 | $31,600 | 4,237 | 4,237 |
Note: Quantity represents Weight in kilograms
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