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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $459,028,884 | 29,982,292 | 29,982,292 |
| 2006 | $488,049,817 | 21,374,209 | 21,374,209 |
| 2007 | $539,884,410 | 23,174,193 | 23,174,193 |
| 2008 | $623,665,120 | 23,515,901 | 23,515,901 |
| 2009 | $444,611,972 | 15,166,473 | 15,166,473 |
| 2010 | $561,790,163 | 19,976,958 | 19,976,958 |
| 2011 | $667,387,733 | 28,672,159 | 28,672,159 |
Note: Quantity represents Weight in kilograms
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