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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $15,600 | 7,790 | 7,790 |
| 2006 | $15,000 | 6,078 | 6,078 |
| 2007 | $7,800 | 1,650 | 1,650 |
| 2008 | $12,900 | 2,527 | 2,527 |
| 2009 | $12,800 | 4,171 | 4,171 |
| 2010 | $8,600 | 1,972 | 1,972 |
| 2011 | $7,400 | 1,449 | 1,449 |
Note: Quantity represents Weight in kilograms
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