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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $397,975,000 | 317,155,300 | 317,155,300 |
| 2006 | $427,886,000 | 333,525,200 | 333,525,200 |
| 2007 | $569,362,000 | 370,549,500 | 370,549,500 |
| 2008 | $650,358,000 | 357,430,800 | 357,430,800 |
| 2009 | $308,422,000 | 204,763,400 | 204,763,400 |
| 2010 | $444,342,999 | 313,467,100 | 313,467,100 |
| 2011 | $638,523,041 | 368,887,408 | 368,887,408 |
Note: Quantity represents Weight in kilograms
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