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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $510,517,374 | 344,602,268 | 344,602,268 |
| 2006 | $642,482,027 | 410,408,823 | 410,408,823 |
| 2007 | $848,221,088 | 486,965,531 | 486,965,531 |
| 2008 | $1,017,775,883 | 512,160,571 | 512,160,571 |
| 2009 | $923,836,239 | 431,085,318 | 431,085,318 |
| 2010 | $1,048,238,296 | 476,123,800 | 476,123,800 |
| 2011 | $1,126,312,552 | 471,705,621 | 471,705,621 |
Note: Quantity represents Weight in kilograms
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