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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $306 | 671 | 671 |
| 2006 | $2,705 | 4,622 | 4,622 |
| 2007 | $3,345 | 2,917 | 2,917 |
| 2008 | $2,376 | 4,792 | 4,792 |
| 2009 | $48,557 | 82,607 | 82,607 |
| 2010 | $2,264 | 3,470 | 3,470 |
| 2011 | $40,954 | 44,141 | 44,141 |
Note: Quantity represents Weight in kilograms
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