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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $223,664,082 | 1,001,806,051 | 1,001,806,051 |
| 2006 | $331,590,064 | 1,160,154,800 | 1,160,154,800 |
| 2007 | $428,313,993 | 1,258,286,520 | 1,258,286,520 |
| 2008 | $607,109,996 | 1,233,826,831 | 1,233,826,831 |
| 2009 | $456,985,214 | 1,197,990,023 | 1,197,990,023 |
| 2010 | $545,123,632 | 1,180,484,915 | 1,180,484,915 |
| 2011 | $616,789,561 | 1,008,501,892 | 1,008,501,892 |
Note: Quantity represents Weight in kilograms
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