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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $659,736,000 | 18,297 | 18,297 |
| 2006 | $691,673,000 | 10,830 | 10,830 |
| 2007 | $780,964,000 | 9,318 | 9,318 |
| 2008 | $884,389,000 | 9,316 | 9,316 |
| 2009 | $641,659,000 | 8,531 | 8,531 |
| 2010 | $711,678,352 | 9,693 | 9,693 |
| 2011 | $826,968,473 | 9,536 | 9,536 |
Note: Quantity represents Weight in kilograms
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