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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $939,982,723 | 60,478 | 60,478 |
| 2006 | $1,207,931,349 | 14,060 | 14,060 |
| 2007 | $1,542,365,398 | 15,690 | 15,690 |
| 2008 | $1,762,486,585 | 14,128 | 14,128 |
| 2009 | $1,412,426,727 | 9,852 | 9,852 |
| 2010 | $1,847,871,424 | 9,638 | 9,638 |
| 2011 | $2,888,702,551 | 11,772 | 11,772 |
Note: Quantity represents Weight in kilograms
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