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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $148 | 1,000 | 1,000 |
| 2006 | $2,192 | 12,450 | 12,450 |
| 2007 | $1,940 | 9,560 | 9,560 |
| 2008 | $5,761 | 30,216 | 30,216 |
| 2009 | $1,949 | 4,700 | 4,700 |
| 2010 | $1,478 | 4,890 | 4,890 |
| 2011 | $9,898 | 44,270 | 44,270 |
Note: Quantity represents Weight in kilograms
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