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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,140,094,844 | 22,419,546 | 22,419,546 |
| 2006 | $936,198,874 | 22,679,237 | 22,679,237 |
| 2007 | $969,166,075 | 20,288,004 | 20,288,004 |
| 2008 | $862,215,312 | 17,707,811 | 17,707,811 |
| 2009 | $300,151,954 | 16,954,629 | 16,954,629 |
| 2010 | $505,052,771 | 19,447,584 | 19,447,584 |
| 2011 | $521,444,812 | 20,169,963 | 20,169,963 |
Note: Quantity represents Weight in kilograms
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