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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $412,826,812 | 0 | 14,716,805 |
| 2006 | $425,694,580 | 0 | 14,440,137 |
| 2007 | $514,142,395 | 0 | 15,911,048 |
| 2008 | $589,537,460 | 0 | 0 |
| 2009 | $354,198,768 | 0 | 10,315,707 |
| 2010 | $488,129,497 | 0 | 11,498,794 |
| 2011 | $677,129,484 | 0 | 13,660,442 |
Note: Quantity represents Weight in carats
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