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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $698,267,327 | 290,658,008 | 290,658,008 |
| 2006 | $719,923,564 | 278,045,200 | 278,045,200 |
| 2007 | $841,879,513 | 286,764,900 | 286,764,900 |
| 2008 | $1,003,448,232 | 309,925,900 | 309,925,900 |
| 2009 | $958,901,878 | 331,041,600 | 331,041,600 |
| 2010 | $948,200,815 | 341,937,078 | 341,937,078 |
| 2011 | $1,078,493,975 | 357,893,923 | 357,893,923 |
Note: Quantity represents Weight in kilograms
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