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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $552,338,359 | 0 | 2,596,656 |
| 2006 | $532,903,111 | 0 | 3,066,100 |
| 2007 | $510,332,089 | 486 | 3,392,219 |
| 2008 | $510,903,487 | 542 | 2,238,122 |
| 2009 | $175,275,643 | 248 | 742,869 |
| 2010 | $170,429,661 | 0 | 603,834 |
| 2011 | $396,263,145 | 0 | 984,567 |
Note: Quantity represents Weight in carats
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