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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $383,895,487 | 533,727,041 | 533,727,041 |
| 2006 | $435,434,207 | 480,228,052 | 480,228,052 |
| 2007 | $363,305,089 | 354,187,834 | 354,187,834 |
| 2008 | $320,975,041 | 305,082,207 | 305,082,207 |
| 2009 | $30,628,823 | 39,136,211 | 39,136,211 |
| 2010 | $166,749,661 | 175,686,883 | 175,686,883 |
| 2011 | $272,349,728 | 206,091,110 | 206,091,110 |
Note: Quantity represents Weight in kilograms
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