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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,339,834 | 6,805,476 | 6,805,476 |
| 2006 | $7,003,398 | 5,776,098 | 5,776,098 |
| 2007 | $6,297,176 | 6,935,418 | 6,935,418 |
| 2008 | $4,562,266 | 5,460,761 | 5,460,761 |
| 2009 | $2,032,908 | 2,977,485 | 2,977,485 |
| 2010 | $1,045,831 | 1,518,733 | 1,518,733 |
| 2011 | $1,436,716 | 2,597,946 | 2,597,946 |
Note: Quantity represents Weight in kilograms
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