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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $54,330,363 | 0 | 389,193 |
| 2006 | $75,297,594 | 0 | 424,807 |
| 2007 | $31,060,475 | 41 | 171,740 |
| 2008 | $7,713,799 | 16 | 35,755 |
| 2009 | $15,503,649 | 27 | 39,504 |
| 2010 | $18,456,859 | 27 | 46,129 |
| 2011 | $92,484,328 | 109 | 320,321 |
Note: Quantity represents Weight in carats
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