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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $333,608,000 | 410,089,100 | 410,089,100 |
| 2006 | $378,976,000 | 430,609,800 | 430,609,800 |
| 2007 | $409,883,000 | 426,278,600 | 426,278,600 |
| 2008 | $446,466,000 | 382,207,200 | 382,207,200 |
| 2009 | $301,627,000 | 240,748,300 | 240,748,300 |
| 2010 | $307,936,513 | 259,392,000 | 259,392,000 |
| 2011 | $358,727,806 | 279,792,155 | 279,792,155 |
Note: Quantity represents Weight in kilograms
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