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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $342,678,572 | 1,560,294,071 | 1,560,294,071 |
| 2006 | $258,553,482 | 1,501,685,130 | 1,501,685,130 |
| 2007 | $311,274,315 | 1,626,267,706 | 1,626,267,706 |
| 2008 | $909,601,542 | 1,901,822,286 | 1,901,822,286 |
| 2009 | $193,401,187 | 434,940,867 | 434,940,867 |
| 2010 | $648,362,806 | 1,801,615,293 | 1,801,615,293 |
| 2011 | $936,631,716 | 2,164,524,167 | 2,164,524,167 |
Note: Quantity represents Weight in kilograms
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