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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $628,213,632 | 0 | 4,506,623 |
| 2006 | $630,696,530 | 0 | 3,792,207 |
| 2007 | $685,737,901 | 274 | 3,044,672 |
| 2008 | $830,848,072 | 426 | 1,847,639 |
| 2009 | $704,943,873 | 0 | 1,770,050 |
| 2010 | $907,938,153 | 0 | 3,843,961 |
| 2011 | $1,254,786,811 | 0 | 3,891,759 |
Note: Quantity represents Weight in carats
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