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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $416,787,000 | 3,753,960 | 3,753,960 |
| 2006 | $410,800,000 | 4,182,807 | 4,182,807 |
| 2007 | $510,836,000 | 3,685,983 | 3,685,983 |
| 2008 | $947,225,000 | 4,671,174 | 4,671,174 |
| 2009 | $621,964,000 | 3,777,263 | 3,777,263 |
| 2010 | $442,890,780 | 3,550,814 | 3,550,814 |
| 2011 | $342,961,345 | 3,397,026 | 3,397,026 |
Note: Quantity represents Weight in kilograms
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