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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $871,844,317 | 2,355,888,656 | 2,355,888,656 |
| 2006 | $874,679,808 | 2,464,561,907 | 2,464,561,907 |
| 2007 | $783,108,683 | 2,073,254,230 | 2,073,254,230 |
| 2008 | $697,182,471 | 1,812,229,000 | 1,812,229,000 |
| 2009 | $614,941,439 | 1,632,924,000 | 1,632,924,000 |
| 2010 | $863,076,546 | 1,678,263,000 | 1,678,263,000 |
Note: Quantity represents Weight in kilograms
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