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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,156,104 | 14,164 | 70,817,753 |
| 2006 | $5,144,111 | 29,274 | 146,370,534 |
| 2007 | $3,636,866 | 14,231 | 71,153,912 |
| 2008 | $2,593,109 | 20,634 | 103,170,313 |
| 2009 | $2,231,566 | 16,825 | 84,124,381 |
| 2010 | $3,034,033 | 0 | 0 |
| 2011 | $3,420,283 | 36,029 | 180,145,771 |
Note: Quantity represents Weight in carats
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