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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $404,849,518 | 37,415,034 | 37,415,034 |
| 2006 | $437,094,349 | 52,568,281 | 52,568,281 |
| 2007 | $481,811,406 | 42,279,014 | 42,279,014 |
| 2008 | $486,458,912 | 31,294,315 | 31,294,315 |
| 2009 | $365,464,512 | 23,220,960 | 23,220,960 |
| 2010 | $483,052,298 | 25,363,833 | 25,363,833 |
| 2011 | $455,054,208 | 27,037,936 | 27,037,936 |
Note: Quantity represents Weight in kilograms
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