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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $84,840,777 | 0 | 320,455,065 |
| 2006 | $102,144,271 | 0 | 521,798,400 |
| 2007 | $140,343,507 | 0 | 538,410,297 |
| 2008 | $171,066,823 | 0 | 291,851,091 |
| 2009 | $113,679,949 | 0 | 297,514,605 |
| 2010 | $136,174,056 | 0 | 317,782,449 |
| 2011 | $130,981,006 | 0 | 568,249,425 |
Note: Quantity represents Weight in carats
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