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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $240,684,000 | 210,139,700 | 210,139,700 |
| 2006 | $301,693,000 | 220,284,600 | 220,284,600 |
| 2007 | $342,000,000 | 203,658,400 | 203,658,400 |
| 2008 | $347,731,000 | 224,430,800 | 224,430,800 |
| 2009 | $50,209,000 | 38,900,224 | 38,900,224 |
Note: Quantity represents Weight in kilograms
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