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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $192,435,600 | 1,108,591,035 | 1,108,591,035 |
| 2006 | $296,201,400 | 1,446,243,166 | 1,446,243,166 |
| 2007 | $339,306,900 | 1,358,515,102 | 1,358,515,102 |
| 2008 | $514,200,400 | 1,338,662,365 | 1,338,662,365 |
| 2009 | $265,688,000 | 1,246,399,818 | 1,246,399,818 |
| 2010 | $436,669,000 | 1,497,036,909 | 1,497,036,909 |
| 2011 | $525,358,200 | 1,444,779,038 | 1,444,779,038 |
Note: Quantity represents Weight in kilograms
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