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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,082 | 19,070 | 19,070 |
| 2006 | $12,377 | 36,009 | 36,009 |
| 2007 | $7,496 | 18,301 | 18,301 |
| 2008 | $19 | 8 | 8 |
| 2009 | $1,303 | 542 | 542 |
| 2010 | $78,037 | 171,320 | 171,320 |
| 2011 | $102,793 | 201,646 | 201,646 |
Note: Quantity represents Weight in kilograms
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