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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $290,016,388 | 333,692,300 | 333,692,300 |
| 2006 | $287,905,895 | 328,412,500 | 328,412,500 |
| 2007 | $358,948,283 | 375,852,300 | 375,852,300 |
| 2008 | $392,982,757 | 358,937,600 | 358,937,600 |
| 2009 | $291,418,186 | 274,256,400 | 274,256,400 |
| 2010 | $259,268,503 | 266,632,900 | 266,632,900 |
| 2011 | $281,158,412 | 269,902,800 | 269,902,800 |
Note: Quantity represents Weight in kilograms
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