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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $953,024,172 | 670,099,867 | 670,099,867 |
| 2006 | $888,115,541 | 591,090,881 | 591,090,881 |
| 2007 | $888,077,343 | 489,987,037 | 489,987,037 |
| 2008 | $726,158,939 | 350,604,915 | 350,604,915 |
| 2009 | $325,225,796 | 151,873,026 | 151,873,026 |
| 2010 | $363,935,320 | 150,129,720 | 150,129,720 |
| 2011 | $538,501,139 | 178,105,748 | 178,105,748 |
Note: Quantity represents Weight in kilograms
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