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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,605,127 | 0 | 57,667 |
| 2006 | $1,877,126 | 0 | 50,241 |
| 2007 | $2,608,276 | 0 | 370,661 |
| 2008 | $1,781,305 | 0 | 295,327 |
| 2009 | $1,052,460 | 0 | 120,756 |
| 2010 | $1,283,219 | 0 | 632,823 |
| 2011 | $2,328,450 | 0 | 236,365 |
Note: Quantity represents Weight in carats
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