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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $961,134,852 | 9,294,662 | 9,294,662 |
| 2006 | $978,491,406 | 11,236,000 | 11,236,000 |
| 2007 | $576,595,424 | 8,532,081 | 8,532,081 |
| 2008 | $623,744,098 | 8,912,180 | 8,912,180 |
| 2009 | $486,176,750 | 5,291,029 | 5,291,029 |
| 2010 | $448,335,263 | 4,089,972 | 4,089,972 |
| 2011 | $452,044,024 | 4,569,163 | 4,569,163 |
Note: Quantity represents Weight in kilograms
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