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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,783,940,141 | 15,991 | 78,735,597 |
| 2006 | $6,589,065,281 | 19,024 | 78,791,287 |
| 2007 | $6,006,973,571 | 26,633 | 81,195,313 |
| 2008 | $5,096,865,588 | 13,064 | 59,534,653 |
| 2009 | $3,139,953,929 | 9,658 | 44,064,081 |
| 2010 | $4,248,548,032 | 9,143 | 40,557,466 |
| 2011 | $5,672,550,119 | 8,495 | 38,472,604 |
Note: Quantity represents Weight in carats
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