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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $13,417,645 | 0 | 73,384,639 |
| 2006 | $21,944,800 | 0 | 152,892,054 |
| 2007 | $45,756,762 | 57,600 | 326,866,864 |
| 2008 | $26,883,881 | 0 | 341,744,719 |
| 2009 | $7,064,821 | 4,854 | 64,928,024 |
| 2010 | $22,527,216 | 13,888 | 149,642,577 |
| 2011 | $15,655,328 | 14,782 | 163,673,554 |
Note: Quantity represents Weight in carats
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