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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $64,000 | 69,500 | 69,500 |
| 2006 | $22,000 | 21,900 | 21,900 |
| 2007 | $86,000 | 54,300 | 54,300 |
| 2008 | $117,000 | 97,400 | 97,400 |
| 2009 | $199,000 | 307,400 | 307,400 |
| 2010 | $183,000 | 142,600 | 142,600 |
| 2011 | $91,000 | 59,900 | 59,900 |
Note: Quantity represents Weight in kilograms
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