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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $720,837,230 | 0 | 278,663 |
| 2006 | $653,871,844 | 0 | 270,483 |
| 2007 | $673,694,205 | 269 | 215,273 |
| 2008 | $707,206,909 | 363 | 178,423 |
| 2009 | $410,830,403 | 0 | 1,008,749 |
| 2010 | $653,304,901 | 0 | 156,841 |
| 2011 | $821,925,677 | 0 | 142,991 |
Note: Quantity represents Weight in carats
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