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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,339,165 | 0 | 26,657,153 |
| 2006 | $7,609,117 | 0 | 20,827,387 |
| 2007 | $5,960,210 | 0 | 7,484,069 |
| 2008 | $5,475,977 | 0 | 14,043,194 |
| 2009 | $2,342,382 | 0 | 91,095,508 |
| 2010 | $5,895,826 | 0 | 28,716,872 |
| 2011 | $2,313,876 | 0 | 31,930,770 |
Note: Quantity represents Weight in carats
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