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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $462,850,881 | 437,261 | 355,505 |
| 2006 | $432,469,666 | 0 | 331,348 |
| 2007 | $592,351,685 | 0 | 439,204 |
| 2008 | $655,194,740 | 0 | 450,568 |
| 2009 | $433,823,941 | 0 | 691,852 |
| 2010 | $551,236,512 | 0 | 468,867 |
| 2011 | $768,701,416 | 0 | 660,561 |
Note: Quantity represents Weight in carats
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