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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $57,551 | 0 | 353,622 |
| 2006 | $4,735 | 0 | 6,560 |
| 2007 | $101,351 | 0 | 126,170 |
| 2008 | $630,441 | 0 | 3,211,869 |
| 2009 | $915,946 | 0 | 3,896,506 |
| 2010 | $1,084,273 | 0 | 4,575,319 |
| 2011 | $1,702,862 | 0 | 8,800,005 |
Note: Quantity represents Weight in carats
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