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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,324,108 | 0 | 138,457 |
| 2006 | $1,973,097 | 0 | 856,052 |
| 2007 | $2,789,675 | 0 | 3,278,348 |
| 2008 | $3,808,138 | 0 | 7,151,026 |
| 2009 | $806,919 | 0 | 1,673,109 |
| 2010 | $862,814 | 0 | 1,782,117 |
| 2011 | $1,026,555 | 0 | 1,365,982 |
Note: Quantity represents Weight in carats
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