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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,288,550,591 | 55,717,470 | 55,717,470 |
| 2006 | $2,413,666,022 | 60,252,524 | 60,252,524 |
| 2007 | $10,747,708,452 | 177,638,376 | 177,638,376 |
| 2008 | $13,040,692,102 | 171,025,604 | 171,025,604 |
| 2009 | $12,431,164,851 | 163,630,159 | 163,630,159 |
| 2010 | $17,236,377,309 | 224,262,094 | 224,262,094 |
| 2011 | $21,493,907,361 | 116,981,272 | 116,981,272 |
Note: Quantity represents Weight in kilograms
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