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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $78,446,341 | 0 | 283,882,672 |
| 2006 | $81,600,820 | 0 | 371,187,397 |
| 2007 | $77,708,864 | 60,602 | 411,230,978 |
| 2008 | $76,785,056 | 56,920 | 198,298,648 |
| 2009 | $41,698,431 | 35,961 | 246,024,076 |
| 2010 | $87,733,867 | 86,682 | 595,583,970 |
| 2011 | $99,438,364 | 103,687 | 726,311,984 |
Note: Quantity represents Weight in carats
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