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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $174,474,743 | 72,820,910 | 72,820,910 |
| 2006 | $496,846,571 | 186,352,784 | 186,352,784 |
| 2007 | $1,046,027,813 | 301,285,707 | 301,285,707 |
| 2008 | $3,274,803,665 | 449,144,915 | 449,144,915 |
| 2009 | $1,189,182,040 | 421,037,996 | 421,037,996 |
| 2010 | $1,263,914,467 | 451,258,632 | 451,258,632 |
| 2011 | $1,437,972,357 | 436,984,185 | 436,984,185 |
Note: Quantity represents Weight in kilograms
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