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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $69,029,230 | 4,002 | 150,871 |
| 2006 | $83,870,280 | 142 | 0 |
| 2007 | $105,385,207 | 11,685 | 170,189 |
| 2008 | $74,178,549 | 12,304 | 1,636,856 |
| 2009 | $47,711,232 | 40,620 | 101,717 |
| 2010 | $40,937,623 | 7,001 | 112,539 |
Note: Quantity represents Weight in carats
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