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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $394,703,057 | 642,016,077 | 642,016,077 |
| 2006 | $432,594,137 | 659,252,452 | 659,252,452 |
| 2007 | $498,555,849 | 685,019,118 | 685,019,118 |
| 2008 | $457,536,356 | 592,349,339 | 592,349,339 |
| 2009 | $369,667,390 | 493,659,441 | 493,659,441 |
| 2010 | $369,195,238 | 630,339,207 | 630,339,207 |
| 2011 | $467,755,317 | 648,992,654 | 648,992,654 |
Note: Quantity represents Weight in kilograms
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