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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $29,521,852 | 0 | 2,117,598 |
| 2006 | $27,564,748 | 0 | 2,177,345 |
| 2007 | $35,390,349 | 0 | 3,059,523 |
| 2008 | $41,597,093 | 0 | 0 |
| 2009 | $18,757,533 | 758 | 1,412,152 |
| 2010 | $32,438,092 | 1,196 | 1,724,893 |
| 2011 | $48,505,761 | 1,462 | 2,461,540 |
Note: Quantity represents Weight in carats
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