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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,109,054,528 | 16,152,379,872 | 16,152,379,872 |
| 2006 | $6,122,761,035 | 18,117,086,666 | 18,117,086,666 |
| 2007 | $6,229,680,190 | 17,737,125,454 | 17,737,125,454 |
| 2008 | $10,775,925,037 | 21,655,916,755 | 21,655,916,755 |
| 2009 | $7,068,133,222 | 19,845,211,190 | 19,845,211,190 |
| 2010 | $7,352,539,606 | 19,632,447,197 | 19,632,447,197 |
Note: Quantity represents Weight in kilograms
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