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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $460,374,989 | 705,650,693 | 705,650,693 |
| 2006 | $382,885,208 | 508,956,058 | 508,956,058 |
| 2007 | $405,067,391 | 599,636,335 | 599,636,335 |
| 2008 | $403,099,574 | 621,601,213 | 621,601,213 |
| 2009 | $909,704,022 | 698,040,879 | 698,040,879 |
| 2010 | $1,326,242,584 | 638,555,653 | 638,555,653 |
| 2011 | $757,714,832 | 455,897,619 | 455,897,619 |
Note: Quantity represents Weight in kilograms
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