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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $10,140,446 | 0 | 77,474,886 |
| 2006 | $14,255,812 | 0 | 165,928,561 |
| 2007 | $12,753,326 | 9,946 | 157,860,961 |
| 2008 | $13,092,040 | 9,705 | 177,278,956 |
| 2009 | $11,941,228 | 10,298 | 159,481,351 |
| 2010 | $23,616,796 | 23,334 | 298,177,110 |
| 2011 | $25,109,495 | 26,182 | 244,302,926 |
Note: Quantity represents Weight in carats
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