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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,129,702,136 | 4,140,067,975 | 4,140,067,975 |
| 2006 | $1,722,552,224 | 4,048,748,883 | 4,048,748,883 |
| 2007 | $1,441,279,950 | 8,877,219,039 | 8,877,219,039 |
| 2008 | $1,962,573,345 | 7,757,131,513 | 7,757,131,513 |
| 2009 | $648,350,391 | 1,451,767,255 | 1,451,767,255 |
| 2010 | $812,378,122 | 2,121,936 | 2,121,936 |
| 2011 | $1,368,155,680 | 3,283,138,571 | 3,283,138,571 |
Note: Quantity represents Weight in kilograms
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