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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $532,684,000 | 36,125 | 36,125 |
| 2006 | $521,294,000 | 23,950 | 23,950 |
| 2007 | $546,152,000 | 26,452 | 26,452 |
| 2008 | $568,959,000 | 21,470 | 21,470 |
| 2009 | $556,890,000 | 16,704 | 16,704 |
| 2010 | $647,866,083 | 17,388 | 17,388 |
| 2011 | $957,027,612 | 25,251 | 25,251 |
Note: Quantity represents Weight in kilograms
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