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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $244,985,000 | 100,962,812 | 100,962,812 |
| 2006 | $221,144,000 | 87,001,700 | 87,001,700 |
| 2007 | $246,711,000 | 90,439,733 | 90,439,733 |
| 2008 | $347,497,000 | 119,584,500 | 119,584,500 |
| 2009 | $348,260,000 | 134,175,985 | 134,175,985 |
| 2010 | $370,564,748 | 156,212,500 | 156,212,500 |
| 2011 | $445,053,316 | 167,664,395 | 167,664,395 |
Note: Quantity represents Weight in kilograms
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