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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,565 | 367 | 367 |
| 2006 | $1,834 | 1,599 | 1,599 |
| 2007 | $5,007 | 5,675 | 5,675 |
| 2008 | $77,690 | 27,961 | 27,961 |
| 2009 | $1,136 | 772 | 772 |
| 2010 | $23,769 | 21,459 | 21,459 |
| 2011 | $54,007 | 64,521 | 64,521 |
Note: Quantity represents Weight in kilograms
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