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| Year | Trade Value | Weight (kg) | Quantity |
| 2006 | $313,037,381 | 3,687,601,576 | 3,687,601,576 |
| 2007 | $611,932,889 | 346,341,682 | 346,341,682 |
| 2008 | $277,150,221 | 140,288,533 | 140,288,533 |
| 2009 | $341,101,199 | 231,205,214 | 231,205,214 |
| 2010 | $415,877,816 | 1,213,801,992 | 1,213,801,992 |
Note: Quantity represents Weight in kilograms
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