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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $348,400,000 | 117,534,331 | 117,534,331 |
| 2006 | $376,005,000 | 117,849,900 | 117,849,900 |
| 2007 | $402,608,000 | 108,655,108 | 108,655,108 |
| 2008 | $455,536,000 | 117,696,060 | 117,696,060 |
| 2009 | $484,041,000 | 131,338,242 | 131,338,242 |
| 2010 | $547,132,961 | 154,681,049 | 154,681,049 |
| 2011 | $613,078,755 | 157,516,386 | 157,516,386 |
Note: Quantity represents Weight in kilograms
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