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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $343,728,146 | 297,244,900 | 297,244,900 |
| 2006 | $259,836,662 | 193,913,721 | 193,913,721 |
| 2007 | $760,236,668 | 478,591,800 | 478,591,800 |
| 2008 | $803,839,518 | 442,937,100 | 442,937,100 |
| 2009 | $498,635,700 | 416,608,543 | 416,608,543 |
| 2010 | $586,437,346 | 414,984,600 | 414,984,600 |
| 2011 | $620,768,287 | 367,193,100 | 367,193,100 |
Note: Quantity represents Weight in kilograms
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