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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,838,323,936 | 0 | 15,665,902 |
| 2006 | $1,772,438,693 | 0 | 15,385,506 |
| 2007 | $1,813,456,193 | 2,382 | 12,023,651 |
| 2008 | $1,575,158,006 | 3,301 | 6,659,452 |
| 2009 | $860,559,945 | 1,497 | 8,669,093 |
| 2010 | $1,188,766,065 | 1,711 | 8,703,876 |
| 2011 | $1,278,411,406 | 1,506 | 5,915,023 |
Note: Quantity represents Weight in carats
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