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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $214,419,720 | 159,872,324 | 159,872,324 |
| 2006 | $218,270,650 | 131,137,047 | 131,137,047 |
| 2007 | $205,326,607 | 133,832,904 | 133,832,904 |
| 2008 | $696,379,850 | 297,645,210 | 297,645,210 |
| 2009 | $1,539,262,972 | 570,949,682 | 570,949,682 |
Note: Quantity represents Weight in kilograms
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