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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $21,842,958 | 0 | 1,358,204 |
| 2006 | $16,960,553 | 0 | 1,190,155 |
| 2007 | $24,471,286 | 0 | 2,331,575 |
| 2008 | $43,273,530 | 0 | 4,186,326 |
| 2009 | $52,692,155 | 0 | 3,594,433 |
| 2010 | $39,332,004 | 0 | 2,908,962 |
| 2011 | $130,770,132 | 0 | 6,253,932 |
Note: Quantity represents Weight in carats
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