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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $85,501,087 | 0 | 132,030,295 |
| 2006 | $110,756,931 | 0 | 306,041,126 |
| 2007 | $169,521,228 | 0 | 132,497,686 |
| 2008 | $241,323,342 | 0 | 641,399,100 |
| 2009 | $201,769,092 | 0 | 175,833,869 |
| 2010 | $224,250,865 | 0 | 244,706,497 |
| 2011 | $250,403,441 | 0 | 376,082,500 |
Note: Quantity represents Weight in carats
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