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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,734,203,669 | 233,260 | 233,260 |
| 2006 | $2,228,290,802 | 366,321 | 366,321 |
| 2007 | $2,736,804,723 | 258,314 | 258,314 |
| 2008 | $3,548,633,270 | 214,485 | 214,485 |
| 2009 | $3,954,479,471 | 167,374 | 167,374 |
| 2010 | $7,342,256,003 | 277,015 | 277,015 |
| 2011 | $10,164,314,309 | 327,069 | 327,069 |
Note: Quantity represents Weight in kilograms
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