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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $36,919,112 | 584,869,915 | 584,869,915 |
| 2006 | $48,140,557 | 701,358,443 | 701,358,443 |
| 2007 | $81,233,278 | 670,819,405 | 670,819,405 |
| 2008 | $186,965,190 | 851,308,475 | 851,308,475 |
| 2009 | $241,529,665 | 3,241,867,668 | 3,241,867,668 |
| 2010 | $541,344,246 | 3,549,777,803 | 3,549,777,803 |
| 2011 | $789,981,065 | 4,832,791,881 | 4,832,791,881 |
Note: Quantity represents Weight in kilograms
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