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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,058 | 7,437 | 7,437 |
| 2006 | $42 | 18 | 18 |
| 2007 | $56,071 | 26,567 | 26,567 |
| 2008 | $1,662 | 807 | 807 |
| 2009 | $31,585 | 15,914 | 15,914 |
| 2010 | $156,761 | 94,862 | 94,862 |
| 2011 | $70,834 | 35,407 | 35,407 |
Note: Quantity represents Weight in kilograms
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