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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $413,664,000 | 130,100,500 | 130,100,500 |
| 2006 | $513,843,000 | 150,471,300 | 150,471,300 |
| 2007 | $601,332,000 | 158,880,557 | 158,880,557 |
| 2008 | $706,472,000 | 166,258,441 | 166,258,441 |
| 2009 | $530,037,000 | 127,571,644 | 127,571,644 |
| 2010 | $630,407,132 | 159,205,108 | 159,205,108 |
| 2011 | $870,884,590 | 182,452,843 | 182,452,843 |
Note: Quantity represents Weight in kilograms
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