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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $502,185,915 | 245,617,467 | 245,617,467 |
| 2006 | $703,005,365 | 264,176,121 | 264,176,121 |
| 2007 | $627,976,748 | 220,335,889 | 220,335,889 |
| 2008 | $874,605,089 | 311,205,974 | 311,205,974 |
| 2009 | $414,058,996 | 229,234,573 | 229,234,573 |
| 2010 | $776,112,398 | 331,727,522 | 331,727,522 |
| 2011 | $1,135,455,922 | 430,385,554 | 430,385,554 |
Note: Quantity represents Weight in kilograms
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