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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $262,117,720 | 238,834 | 0 |
| 2006 | $224,809,127 | 233,712,000 | 13 |
| 2007 | $518,840,657 | 495,057,000 | 20 |
| 2008 | $785,637,407 | 816,159,000 | 21 |
| 2009 | $441,493,302 | 429,626,000 | 16 |
| 2010 | $242,222,586 | 369,102,000 | 18 |
| 2011 | $355,840,130 | 341,825,000 | 14 |
Note: Quantity represents No Quantity
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