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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $100,717,000 | 449,397,500 | 449,397,500 |
| 2006 | $93,350,000 | 390,216,500 | 390,216,500 |
| 2007 | $116,447,000 | 378,415,300 | 378,415,300 |
| 2008 | $227,403,000 | 510,365,900 | 510,365,900 |
| 2009 | $207,360,000 | 764,567,400 | 764,567,400 |
| 2010 | $183,909,192 | 665,826,600 | 665,826,600 |
| 2011 | $252,291,951 | 674,124,778 | 674,124,778 |
Note: Quantity represents Weight in kilograms
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