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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $32,691 | 5,856 | 5,856 |
| 2006 | $38,965 | 38,058 | 38,058 |
| 2007 | $62,231 | 66,035 | 66,035 |
| 2008 | $80,258 | 105,203 | 105,203 |
| 2009 | $75,826 | 145,865 | 145,865 |
| 2010 | $126,119 | 277,083 | 277,083 |
| 2011 | $117,099 | 149,616 | 149,616 |
Note: Quantity represents Weight in kilograms
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