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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $193,069,995 | 276,209,803 | 276,209,803 |
| 2006 | $362,311,453 | 431,301,717 | 431,301,717 |
| 2007 | $347,233,399 | 397,237,586 | 397,237,586 |
| 2008 | $292,293,965 | 247,508,000 | 247,508,000 |
| 2009 | $228,925,106 | 216,747,000 | 216,747,000 |
| 2010 | $242,375,770 | 313,295,000 | 313,295,000 |
Note: Quantity represents Weight in kilograms
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