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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $423,700,978 | 198,060,397 | 198,060,397 |
| 2006 | $551,360,750 | 268,223,407 | 268,223,407 |
| 2007 | $687,960,413 | 260,980,238 | 260,980,238 |
| 2008 | $792,532,468 | 266,854,377 | 266,854,377 |
| 2009 | $582,632,533 | 196,061,343 | 196,061,343 |
| 2010 | $614,434,209 | 237,399,128 | 237,399,128 |
Note: Quantity represents Weight in kilograms
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