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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $595,088,950 | 105,418,769 | 105,418,769 |
| 2006 | $551,418,405 | 66,588,780 | 66,588,780 |
| 2007 | $520,487,555 | 72,028,563 | 72,028,563 |
| 2008 | $499,703,815 | 69,159,132 | 69,159,132 |
| 2009 | $349,374,203 | 39,391,908 | 39,391,908 |
| 2010 | $382,460,701 | 46,906,064 | 46,906,064 |
| 2011 | $417,348,190 | 50,517,880 | 50,517,880 |
Note: Quantity represents Weight in kilograms
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