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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $511,158,000 | 1,220,079 | 1,220,079 |
| 2006 | $658,291,000 | 876,560 | 876,560 |
| 2007 | $765,359,000 | 947,523 | 947,523 |
| 2008 | $700,679,000 | 998,054 | 998,054 |
| 2009 | $710,751,000 | 941,830 | 941,830 |
| 2010 | $822,905,334 | 939,960 | 939,960 |
| 2011 | $1,133,243,476 | 2,861,231 | 2,861,231 |
Note: Quantity represents Weight in kilograms
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