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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $25,189 | 146,650 | 146,650 |
| 2006 | $24,095 | 88,600 | 88,600 |
| 2007 | $1,621 | 4,000 | 4,000 |
| 2008 | $818 | 3,151 | 3,151 |
| 2009 | $18 | 1 | 1 |
| 2010 | $77,530 | 108,900 | 108,900 |
| 2011 | $35,775 | 43,700 | 43,700 |
Note: Quantity represents Weight in kilograms
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