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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,396,077,249 | 10,427,580 | 10,427,580 |
| 2006 | $1,345,541,500 | 11,376,983 | 11,376,983 |
| 2007 | $1,231,671,437 | 12,652,544 | 12,652,544 |
| 2008 | $1,434,135,493 | 12,803,465 | 12,803,465 |
| 2009 | $1,907,297,227 | 13,444,436 | 13,444,436 |
| 2010 | $1,970,047,762 | 14,683,575 | 14,683,575 |
| 2011 | $1,816,182,996 | 15,010,845 | 15,010,845 |
Note: Quantity represents Weight in kilograms
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