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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,411,830,328 | 1,055,986,988 | 1,055,986,988 |
| 2006 | $2,090,625,453 | 1,062,147,121 | 1,062,147,121 |
| 2007 | $1,983,694,344 | 951,746,196 | 951,746,196 |
| 2008 | $2,277,075,989 | 861,424,219 | 861,424,219 |
| 2009 | $1,175,153,990 | 659,934,399 | 659,934,399 |
| 2010 | $2,647,355,719 | 838,522,416 | 838,522,416 |
| 2011 | $4,110,106,553 | 898,380,902 | 898,380,902 |
Note: Quantity represents Weight in kilograms
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