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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $14,714,863 | 0 | 9,299,390,567 |
| 2006 | $10,841,396 | 0 | 6,371,261,708 |
| 2007 | $9,675,573 | 0 | 2,888,277,543 |
| 2008 | $6,610,363 | 0 | 1,575,551,995 |
| 2009 | $8,554,487 | 0 | 2,053,880,247 |
| 2010 | $6,239,657 | 0 | 1,111,277,878 |
| 2011 | $14,816,135 | 0 | 1,344,399,188 |
Note: Quantity represents Weight in carats
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