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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $15,390,038,693 | 0 | 16,996,923 |
| 2006 | $16,466,415,361 | 0 | 17,065,343 |
| 2007 | $18,134,657,307 | 0 | 15,483,129 |
| 2008 | $19,009,979,858 | 0 | 12,919,153 |
| 2009 | $12,459,762,072 | 0 | 10,694,536 |
| 2010 | $18,079,065,255 | 0 | 13,394,351 |
| 2011 | $21,707,204,783 | 0 | 13,326,999 |
Note: Quantity represents Weight in carats
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