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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,019,778,147 | 561,399,562 | 561,399,562 |
| 2006 | $1,494,903,823 | 613,888,550 | 613,888,550 |
| 2007 | $1,516,840,229 | 581,489,562 | 581,489,562 |
| 2008 | $1,417,466,256 | 547,230,057 | 547,230,057 |
| 2009 | $1,013,459,970 | 649,396,315 | 649,396,315 |
| 2010 | $1,109,211,927 | 524,799,611 | 524,799,611 |
| 2011 | $1,165,640,381 | 486,627,782 | 486,627,782 |
Note: Quantity represents Weight in kilograms
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