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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $85,688,499 | 0 | 370,331 |
| 2006 | $229,975,219 | 0 | 1,259,850 |
| 2007 | $261,037,931 | 343 | 2,054,901 |
| 2008 | $260,090,800 | 545 | 1,498,559 |
| 2009 | $112,090,417 | 195 | 668,930 |
| 2010 | $189,561,691 | 273 | 788,204 |
| 2011 | $206,523,691 | 243 | 579,011 |
Note: Quantity represents Weight in carats
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