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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $483,136,800 | 12,998,750 | 12,998,750 |
| 2006 | $551,681,566 | 14,347,229 | 14,347,229 |
| 2007 | $627,781,582 | 21,424,923 | 21,424,923 |
| 2008 | $813,276,972 | 16,190,140 | 16,190,140 |
| 2009 | $584,675,104 | 12,827,699 | 12,827,699 |
| 2010 | $905,760,983 | 18,412,000 | 18,412,000 |
| 2011 | $911,028,555 | 17,803,921 | 17,803,921 |
Note: Quantity represents Weight in kilograms
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