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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,371,791,000 | 337,332,846 | 337,332,846 |
| 2006 | $1,674,775,000 | 390,753,133 | 390,753,133 |
| 2007 | $1,955,425,000 | 429,416,857 | 429,416,857 |
| 2008 | $2,060,588,000 | 414,231,104 | 414,231,104 |
| 2009 | $1,476,858,000 | 299,260,011 | 299,260,011 |
| 2010 | $1,765,926,500 | 376,191,782 | 376,191,782 |
| 2011 | $2,451,607,162 | 482,672,203 | 482,672,203 |
Note: Quantity represents Weight in kilograms
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