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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $955 | 1,406 | 1,406 |
| 2006 | $4,355 | 6,214 | 6,214 |
| 2007 | $156 | 272 | 272 |
| 2008 | $15,384 | 20,593 | 20,593 |
| 2009 | $20,454 | 30,618 | 30,618 |
| 2010 | $22,851 | 34,791 | 34,791 |
| 2011 | $33,770 | 48,671 | 48,671 |
Note: Quantity represents Weight in kilograms
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