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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $327,228,000 | 117,812,900 | 117,812,900 |
| 2006 | $564,260,000 | 171,094,100 | 171,094,100 |
| 2007 | $663,818,000 | 147,141,700 | 147,141,700 |
| 2008 | $583,159,000 | 138,400,000 | 138,400,000 |
| 2009 | $307,746,000 | 109,132,355 | 109,132,355 |
| 2010 | $489,575,719 | 146,549,700 | 146,549,700 |
| 2011 | $557,657,884 | 150,044,813 | 150,044,813 |
Note: Quantity represents Weight in kilograms
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