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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $77,604,419 | 0 | 30,924,437 |
| 2006 | $115,917,430 | 40,174 | 200,868,966 |
| 2007 | $85,099,942 | 66,366 | 233,626,080 |
| 2008 | $30,092,652 | 46,412 | 232,059,616 |
| 2009 | $8,114,980 | 17,356 | 86,782,073 |
| 2010 | $15,628,635 | 27,663 | 138,315,230 |
| 2011 | $61,961,747 | 147,466 | 737,328,237 |
Note: Quantity represents Weight in carats
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