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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $663,797,577 | 19,095,174 | 19,095,174 |
| 2006 | $1,389,348,972 | 63,531,554 | 63,531,554 |
| 2007 | $1,149,829,667 | 52,977,674 | 52,977,674 |
| 2008 | $353,688,022 | 6,479,375 | 6,479,375 |
| 2009 | $347,109,941 | 6,425,336 | 6,425,336 |
| 2010 | $549,617,346 | 12,152,124 | 12,152,124 |
| 2011 | $499,657,543 | 6,668,218 | 6,668,218 |
Note: Quantity represents Weight in kilograms
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