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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $11,194,613 | 18,621,604 | 18,621,604 |
| 2006 | $24,145,666 | 39,542,507 | 39,542,507 |
| 2007 | $57,075,581 | 80,228,317 | 80,228,317 |
| 2008 | $84,279,634 | 105,858,591 | 105,858,591 |
| 2009 | $235,106,046 | 472,746,046 | 472,746,046 |
| 2010 | $412,925,804 | 541,005,071 | 541,005,071 |
| 2011 | $674,627,862 | 795,084,942 | 795,084,942 |
Note: Quantity represents Weight in kilograms
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