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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $261,140,000 | 26,135,400 | 26,135,400 |
| 2006 | $303,150,000 | 30,477,706 | 30,477,706 |
| 2007 | $336,410,000 | 28,601,065 | 28,601,065 |
| 2008 | $366,964,000 | 30,711,855 | 30,711,855 |
| 2009 | $360,125,000 | 35,596,088 | 35,596,088 |
| 2010 | $373,787,189 | 37,769,136 | 37,769,136 |
| 2011 | $439,777,088 | 41,792,078 | 41,792,078 |
Note: Quantity represents Weight in kilograms
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