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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $416,028,381 | 13,542 | 13,542 |
| 2006 | $629,976,357 | 15,273 | 15,273 |
| 2007 | $849,203,866 | 18,181 | 18,181 |
| 2008 | $792,399,110 | 13,500 | 13,500 |
| 2009 | $426,354,230 | 10,682 | 10,682 |
| 2010 | $498,826,952 | 9,637 | 9,637 |
| 2011 | $496,873,412 | 8,718 | 8,718 |
Note: Quantity represents Weight in kilograms
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