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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $27,466,628 | 0 | 407,111,485 |
| 2006 | $46,676,256 | 0 | 613,694,934 |
| 2007 | $67,012,949 | 84,357 | 847,070,344 |
| 2008 | $80,231,622 | 0 | 1,220,728,297 |
| 2009 | $58,312,470 | 40,068 | 975,571,748 |
| 2010 | $118,885,030 | 73,293 | 1,991,676,003 |
| 2011 | $151,907,133 | 143,432 | 2,253,980,940 |
Note: Quantity represents Weight in carats
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