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| Year | Trade Value | Weight (kg) | Quantity |
| 2007 | $290,420,000 | 329,967,700 | 329,967,700 |
| 2008 | $311,496,000 | 291,233,300 | 291,233,300 |
| 2009 | $187,013,000 | 216,397,257 | 216,397,257 |
| 2010 | $255,948,160 | 296,244,800 | 296,244,800 |
| 2011 | $331,450,521 | 317,538,635 | 317,538,635 |
Note: Quantity represents Weight in kilograms
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