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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $763,607,975 | 264,947,992 | 264,947,992 |
| 2006 | $770,019,555 | 268,623,655 | 268,623,655 |
| 2007 | $750,211,820 | 257,883,810 | 257,883,810 |
| 2008 | $762,086,529 | 249,694,334 | 249,694,334 |
| 2009 | $687,427,522 | 241,532,882 | 241,532,882 |
| 2010 | $859,495,035 | 262,690,550 | 262,690,550 |
| 2011 | $974,128,966 | 249,432,127 | 249,432,127 |
Note: Quantity represents Weight in kilograms
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