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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $386,445,000 | 213,186,600 | 213,186,600 |
| 2006 | $524,400,000 | 269,566,270 | 269,566,270 |
| 2007 | $661,004,000 | 296,078,900 | 296,078,900 |
| 2008 | $698,279,000 | 275,751,700 | 275,751,700 |
| 2009 | $369,010,000 | 193,378,624 | 193,378,624 |
| 2010 | $679,923,734 | 306,666,193 | 306,666,193 |
| 2011 | $773,493,587 | 269,703,422 | 269,703,422 |
Note: Quantity represents Weight in kilograms
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