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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $377,188,834 | 2,052,093,499 | 2,052,093,499 |
| 2006 | $541,296,500 | 2,758,020,369 | 2,758,020,369 |
| 2007 | $436,864,648 | 1,798,329,648 | 1,798,329,648 |
| 2008 | $724,311,932 | 1,707,275,299 | 1,707,275,299 |
| 2009 | $825,101,531 | 3,070,223,745 | 3,070,223,745 |
| 2010 | $546,675,831 | 1,973,933,542 | 1,973,933,542 |
| 2011 | $955,282,199 | 2,767,589,574 | 2,767,589,574 |
Note: Quantity represents Weight in kilograms
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