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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $15,400 | 4,159 | 4,159 |
| 2006 | $19,100 | 4,226 | 4,226 |
| 2007 | $27,400 | 3,547 | 3,547 |
| 2008 | $23,200 | 3,596 | 3,596 |
| 2009 | $24,900 | 4,133 | 4,133 |
| 2010 | $20,400 | 2,721 | 2,721 |
| 2011 | $22,200 | 3,112 | 3,112 |
Note: Quantity represents Weight in kilograms
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