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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $640,600,000 | 25,312,535 | 25,312,535 |
| 2006 | $742,297,000 | 29,264,453 | 29,264,453 |
| 2007 | $967,116,000 | 31,562,889 | 31,562,889 |
| 2008 | $1,138,069,000 | 32,605,082 | 32,605,082 |
| 2009 | $1,048,847,000 | 31,147,615 | 31,147,615 |
| 2010 | $1,187,461,345 | 31,513,144 | 31,513,144 |
| 2011 | $1,448,723,396 | 33,718,548 | 33,718,548 |
Note: Quantity represents Weight in kilograms
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