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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,821,550 | 2,992 | 14,990,833 |
| 2006 | $2,107,598 | 4,090 | 20,448,330 |
| 2007 | $2,534,632 | 5,503 | 26,918,600 |
| 2008 | $2,249,530 | 4,686 | 23,418,900 |
| 2009 | $1,062,991 | 1,966 | 9,837,400 |
| 2010 | $1,573,890 | 3,578 | 17,935,450 |
| 2011 | $2,294,954 | 5,848 | 29,238,120 |
Note: Quantity represents Weight in carats
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