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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $277,766,905 | 18,393,567 | 18,393,567 |
| 2006 | $386,733,326 | 25,253,970 | 25,253,970 |
| 2007 | $407,654,555 | 25,013,562 | 25,013,562 |
| 2008 | $527,770,779 | 29,976,359 | 29,976,359 |
| 2009 | $522,364,513 | 32,246,687 | 32,246,687 |
| 2010 | $662,653,187 | 44,333,818 | 44,333,818 |
| 2011 | $870,934,875 | 49,918,887 | 49,918,887 |
Note: Quantity represents Weight in kilograms
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