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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $384,187,705 | 294,336,794 | 294,336,794 |
| 2006 | $435,762,659 | 305,449,056 | 305,449,056 |
| 2007 | $391,007,298 | 274,079,336 | 274,079,336 |
| 2008 | $463,538,709 | 271,078,541 | 271,078,541 |
| 2009 | $309,535,097 | 239,209,607 | 239,209,607 |
| 2010 | $402,282,554 | 254,233,259 | 254,233,259 |
| 2011 | $426,056,979 | 237,286,886 | 237,286,886 |
Note: Quantity represents Weight in kilograms
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