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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $11,000 | 35,300 | 35,300 |
| 2006 | $1,426,000 | 27,801,000 | 27,801,000 |
| 2007 | $9,983,000 | 140,400,400 | 140,400,400 |
| 2008 | $39,361,000 | 425,680,300 | 425,680,300 |
| 2009 | $60,533,000 | 523,719,600 | 523,719,600 |
| 2010 | $75,788,301 | 696,279,100 | 696,279,100 |
| 2011 | $98,060,219 | 789,313,083 | 789,313,083 |
Note: Quantity represents Weight in kilograms
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