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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $606,813,550 | 149,486,747 | 149,486,747 |
| 2006 | $640,791,365 | 160,112,967 | 160,112,967 |
| 2007 | $689,556,428 | 158,130,136 | 158,130,136 |
| 2008 | $665,219,923 | 136,517,217 | 136,517,217 |
| 2009 | $409,593,908 | 81,445,157 | 81,445,157 |
| 2010 | $507,523,112 | 102,906,015 | 102,906,015 |
| 2011 | $661,695,649 | 123,826,339 | 123,826,339 |
Note: Quantity represents Weight in kilograms
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