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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $129,000 | 0 | 498 |
| 2006 | $7,035,125 | 22 | 111,570 |
| 2007 | $45,905,943 | 242 | 1,208,906 |
| 2008 | $43,267,992 | 107 | 535,613 |
| 2009 | $58,204,946 | 90 | 452,198 |
| 2010 | $79,376,344 | 96 | 480,281 |
| 2011 | $207,453,118 | 216 | 1,080,938 |
Note: Quantity represents Weight in carats
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