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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $149,873,000 | 585,935,200 | 585,935,200 |
| 2006 | $182,280,000 | 673,421,000 | 673,421,000 |
| 2007 | $264,135,000 | 813,224,800 | 813,224,800 |
| 2008 | $351,844,000 | 734,361,100 | 734,361,100 |
| 2009 | $251,906,000 | 596,001,800 | 596,001,800 |
| 2010 | $259,712,000 | 637,024,200 | 637,024,200 |
| 2011 | $252,404,000 | 564,126,400 | 564,126,400 |
Note: Quantity represents Weight in kilograms
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