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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $927,574,379 | 2,791 | 5,330,874 |
| 2006 | $817,706,609 | 33,318 | 2,361,783 |
| 2007 | $1,078,604,992 | 9,659 | 482,463 |
| 2008 | $1,288,885,820 | 8,028 | 795,612 |
| 2009 | $1,025,187,907 | 3,007 | 257,202 |
| 2010 | $1,193,219,085 | 1,341 | 421,531 |
| 2011 | $1,127,228,841 | 998 | 1,312,962 |
Note: Quantity represents Weight in carats
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