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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $36,759,926 | 95,221 | 475,080,194 |
| 2006 | $47,670,516 | 118,713 | 593,599,424 |
| 2007 | $44,683,000 | 213,574 | 1,069,115,035 |
| 2008 | $44,391,748 | 192,332 | 967,845,767 |
| 2009 | $26,415,405 | 201,840 | 1,021,469,208 |
| 2010 | $36,927,321 | 235,403 | 1,183,324,913 |
| 2011 | $51,499,688 | 271,214 | 1,372,612,802 |
Note: Quantity represents Weight in carats
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