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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,777,966 | 0 | 1,060,949 |
| 2006 | $3,046,727 | 0 | 4,125,695 |
| 2007 | $2,758,165 | 0 | 2,710,585 |
| 2008 | $2,248,420 | 0 | 2,173,633 |
| 2009 | $1,822,665 | 0 | 644,771 |
| 2010 | $6,830,672 | 0 | 1,380,361 |
| 2011 | $5,012,036 | 0 | 8,336,384 |
Note: Quantity represents Weight in carats
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