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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,894,482 | 0 | 699,884,410 |
| 2006 | $2,832,178 | 0 | 802,921,452 |
| 2007 | $3,901,953 | 0 | 887,173,506 |
| 2008 | $14,474,943 | 0 | 544,598,584 |
| 2009 | $1,584,167 | 0 | 711,177,436 |
| 2010 | $2,449,483 | 0 | 839,092,136 |
| 2011 | $1,838,469 | 0 | 1,083,599,174 |
Note: Quantity represents Weight in carats
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