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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $609,015,594 | 17,213,078 | 17,213,078 |
| 2006 | $502,214,320 | 14,142,050 | 14,142,050 |
| 2007 | $663,943,964 | 23,239,128 | 23,239,128 |
| 2008 | $735,971,390 | 26,018,485 | 26,018,485 |
| 2009 | $1,148,321,453 | 43,898,071 | 43,898,071 |
| 2010 | $1,508,621,347 | 58,566,060 | 58,566,060 |
| 2011 | $1,559,141,891 | 73,372,683 | 73,372,683 |
Note: Quantity represents Weight in kilograms
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