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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,976,485,842 | 5,506 | 16,818,555 |
| 2006 | $554,671,695 | 1,123 | 3,554,019 |
| 2007 | $728,054,085 | 83,372 | 5,307,857 |
| 2008 | $879,218,248 | 1,027 | 3,388,395 |
| 2009 | $762,493,240 | 855 | 4,095,534 |
| 2010 | $1,101,019,791 | 791 | 3,874,309 |
| 2011 | $994,089,683 | 7,954 | 2,735,363 |
Note: Quantity represents Weight in carats
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