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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $286,232,000 | 217,551,300 | 217,551,300 |
| 2006 | $375,316,000 | 243,618,700 | 243,618,700 |
| 2007 | $430,783,000 | 241,474,700 | 241,474,700 |
| 2008 | $566,172,000 | 267,761,300 | 267,761,300 |
| 2009 | $423,833,000 | 263,022,300 | 263,022,300 |
| 2010 | $480,036,296 | 251,496,294 | 251,496,294 |
| 2011 | $518,170,344 | 227,871,865 | 227,871,865 |
Note: Quantity represents Weight in kilograms
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