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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $646,592,422 | 53,545 | 53,545 |
| 2006 | $563,491,567 | 147,448 | 147,448 |
| 2007 | $637,577,558 | 17,675 | 17,675 |
| 2008 | $687,026,913 | 86,041 | 86,041 |
| 2009 | $614,286,101 | 25,344 | 25,344 |
| 2010 | $1,055,271,494 | 25,020 | 25,020 |
| 2011 | $1,260,668,137 | 26,533 | 26,533 |
Note: Quantity represents Weight in kilograms
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