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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,332,173,750 | 51,329 | 500,591 |
| 2006 | $1,218,726,377 | 54,037 | 543,079 |
| 2007 | $1,457,903,512 | 132 | 559,591 |
| 2008 | $1,956,616,537 | 137 | 582,240 |
| 2009 | $1,317,693,979 | 55 | 252,685 |
| 2010 | $1,395,859,486 | 77 | 357,976 |
| 2011 | $1,621,957,811 | 98 | 455,272 |
Note: Quantity represents Weight in carats
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