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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,401,831 | 0 | 123,249 |
| 2006 | $3,559,661 | 0 | 73,382 |
| 2007 | $10,171,012 | 0 | 113,564 |
| 2008 | $15,975,288 | 0 | 129,281 |
| 2009 | $5,438,216 | 0 | 49,526 |
| 2010 | $2,713,229 | 0 | 261,121 |
| 2011 | $18,340,675 | 0 | 212,010 |
Note: Quantity represents Weight in carats
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