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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $671,266,540 | 50,222,214 | 50,222,214 |
| 2006 | $638,344,473 | 47,759,081 | 47,759,081 |
| 2007 | $1,224,243,569 | 89,416,678 | 89,416,678 |
| 2008 | $1,032,750,745 | 77,764,844 | 77,764,844 |
| 2009 | $764,728,462 | 48,149,380 | 48,149,380 |
| 2010 | $1,008,532,533 | 68,816,998 | 68,816,998 |
| 2011 | $1,035,985,819 | 74,607,913 | 74,607,913 |
Note: Quantity represents Weight in kilograms
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