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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,817,400 | 161,873 | 125,500,772 |
| 2006 | $7,141,871 | 234,093 | 0 |
| 2007 | $6,356,488 | 131,127 | 582,926,230 |
| 2008 | $5,771,566 | 155,334 | 702,669,435 |
| 2009 | $5,201,858 | 121,599 | 425,225,874 |
| 2010 | $7,421,925 | 173,221 | 1,217,035 |
Note: Quantity represents Weight in carats
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