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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $919,946 | 3,625 | 18,125,201 |
| 2006 | $1,395,747 | 9,650 | 48,248,397 |
| 2007 | $1,378,013 | 8,909 | 44,546,771 |
| 2008 | $1,427,809 | 4,211 | 21,055,560 |
| 2009 | $2,580,516 | 0 | 0 |
| 2010 | $2,045,661 | 1,868 | 9,341,090 |
Note: Quantity represents Weight in carats
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