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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,288,788,800 | 0 | 7,069 |
| 2006 | $3,262,192,341 | 0 | 6,521 |
| 2007 | $3,155,881,269 | 6,516 | 32,580,000 |
| 2008 | $2,812,611,779 | 5,442 | 27,211,312 |
| 2009 | $1,944,683,574 | 5,835 | 29,173,858 |
| 2010 | $2,735,517,095 | 4,566 | 20,039,684 |
| 2011 | $3,718,074,208 | 4,231 | 0 |
Note: Quantity represents Weight in carats
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