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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $146,676,911 | 252,027,667 | 252,027,667 |
| 2006 | $80,093,032 | 190,246,406 | 190,246,406 |
| 2007 | $83,141,029 | 181,861,465 | 181,861,465 |
| 2008 | $38,672,633 | 92,988,248 | 92,988,248 |
| 2009 | $26,822,910 | 44,306,095 | 44,306,095 |
| 2010 | $22,795,360 | 85,469,267 | 85,469,267 |
Note: Quantity represents Weight in kilograms
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