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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,170,092,642 | 192,505,519 | 192,505,519 |
| 2006 | $1,396,811,708 | 224,491,952 | 224,491,952 |
| 2007 | $1,683,303,553 | 276,731,588 | 276,731,588 |
| 2008 | $2,147,759,365 | 315,055,610 | 315,055,610 |
| 2009 | $1,240,195,090 | 168,440,760 | 168,440,760 |
| 2010 | $2,517,988,534 | 353,444,459 | 353,444,459 |
| 2011 | $3,031,730,220 | 384,567,637 | 384,567,637 |
Note: Quantity represents Weight in kilograms
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