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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $522,479,000 | 457,329,509 | 457,329,509 |
| 2006 | $410,262,000 | 359,105,187 | 359,105,187 |
| 2007 | $717,519,000 | 0 | 0 |
| 2008 | $1,679,848,000 | 1,249,338,576 | 1,249,338,576 |
| 2009 | $890,176,000 | 472,981,214 | 472,981,214 |
| 2010 | $1,357,565,000 | 701,407,834 | 701,407,834 |
| 2011 | $1,617,770,000 | 1,401,175,653 | 1,401,175,653 |
Note: Quantity represents Weight in kilograms
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