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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,118,829,554 | 624,391,763 | 624,391,763 |
| 2006 | $1,196,617,805 | 639,879,589 | 639,879,589 |
| 2007 | $1,252,577,887 | 821,993,546 | 821,993,546 |
| 2008 | $1,000,294,302 | 565,050,660 | 565,050,660 |
| 2009 | $659,511,202 | 385,522,069 | 385,522,069 |
| 2010 | $830,250,444 | 692,925,899 | 692,925,899 |
| 2011 | $824,404,108 | 813,680,075 | 813,680,075 |
Note: Quantity represents Weight in kilograms
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