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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,672,203,539 | 160,480,186 | 160,480,186 |
| 2006 | $2,263,120,225 | 145,092,455 | 145,092,455 |
| 2007 | $3,119,808,039 | 151,291,468 | 151,291,468 |
| 2008 | $3,885,245,244 | 152,375,834 | 152,375,834 |
| 2009 | $3,617,076,744 | 166,792,009 | 166,792,009 |
| 2010 | $3,757,190,956 | 155,876,436 | 155,876,436 |
| 2011 | $3,349,871,530 | 124,147,597 | 124,147,597 |
Note: Quantity represents Weight in kilograms
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