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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $864,353,387 | 0 | 1,057,607 |
| 2006 | $801,448,963 | 0 | 1,199,716 |
| 2007 | $847,974,245 | 808 | 1,365,527 |
| 2008 | $751,781,832 | 797 | 725,423 |
| 2009 | $289,371,515 | 410 | 699,663 |
| 2010 | $524,262,521 | 0 | 388,653 |
| 2011 | $630,643,955 | 0 | 703,904 |
Note: Quantity represents Weight in carats
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