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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $247,258,000 | 123,237,300 | 123,237,300 |
| 2006 | $303,579,000 | 147,532,100 | 147,532,100 |
| 2007 | $276,605,000 | 120,286,200 | 120,286,200 |
| 2008 | $260,667,000 | 94,878,300 | 94,878,300 |
| 2009 | $47,180,000 | 7,467,889 | 7,467,889 |
| 2010 | $64,750,912 | 9,903,405 | 9,903,405 |
| 2011 | $67,939,440 | 9,462,094 | 9,462,094 |
Note: Quantity represents Weight in kilograms
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