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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $93,460,104 | 0 | 6,694,696 |
| 2006 | $80,998,719 | 0 | 5,079,533 |
| 2007 | $88,666,701 | 103 | 4,701,978 |
| 2008 | $99,577,158 | 0 | 5,285,533 |
| 2009 | $92,018,630 | 0 | 8,086,592 |
| 2010 | $93,135,580 | 0 | 0 |
| 2011 | $105,169,391 | 0 | 25,134,456 |
Note: Quantity represents Weight in carats
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