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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $57,105 | 35,521 | 35,521 |
| 2006 | $100,627 | 70,283 | 70,283 |
| 2007 | $114,642 | 26,664 | 26,664 |
| 2008 | $72,235 | 28,418 | 28,418 |
| 2009 | $80,939 | 52,310 | 52,310 |
| 2010 | $281,101 | 131,832 | 131,832 |
| 2011 | $193,595 | 126,536 | 126,536 |
Note: Quantity represents Weight in kilograms
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