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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $503,377,000 | 185,274,000 | 185,274,000 |
| 2006 | $945,382,000 | 284,564,000 | 284,564,000 |
| 2007 | $1,183,334,000 | 252,408,600 | 252,408,600 |
| 2008 | $894,000,000 | 207,667,500 | 207,667,500 |
| 2009 | $481,341,000 | 176,275,900 | 176,275,900 |
| 2010 | $778,870,944 | 233,288,000 | 233,288,000 |
| 2011 | $861,591,931 | 234,484,254 | 234,484,254 |
Note: Quantity represents Weight in kilograms
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