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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,311,720,000 | 22,248,883 | 22,248,883 |
| 2006 | $1,485,015,000 | 24,171,814 | 24,171,814 |
| 2007 | $1,623,486,000 | 25,585,174 | 25,585,174 |
| 2008 | $1,734,337,000 | 24,005,373 | 24,005,373 |
| 2009 | $1,241,877,000 | 19,245,021 | 19,245,021 |
| 2010 | $1,614,771,835 | 25,212,172 | 25,212,172 |
| 2011 | $1,943,550,015 | 26,092,516 | 26,092,516 |
Note: Quantity represents Weight in kilograms
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