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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $712,953,461 | 51,425,134 | 51,425,134 |
| 2006 | $747,235,279 | 98,371,941 | 98,371,941 |
| 2007 | $793,984,018 | 48,396,776 | 48,396,776 |
| 2008 | $732,416,723 | 40,267,741 | 40,267,741 |
| 2009 | $458,654,869 | 26,100,981 | 26,100,981 |
| 2010 | $619,170,759 | 32,233,239 | 32,233,239 |
| 2011 | $650,184,106 | 33,292,906 | 33,292,906 |
Note: Quantity represents Weight in kilograms
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