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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $10,158,318,136 | 444,125 | 146,916,406 |
| 2006 | $9,288,863,644 | 25,617 | 128,266,346 |
| 2007 | $10,710,974,715 | 440,365 | 134,798,625 |
| 2008 | $9,450,962,149 | 231,401 | 107,105,226 |
| 2009 | $6,842,670,026 | 18,488 | 92,233,129 |
| 2010 | $10,127,131,868 | 24,005 | 119,857,864 |
| 2011 | $12,754,075,474 | 19,494 | 97,091,210 |
Note: Quantity represents Weight in carats
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