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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $662,840,000 | 141,229,200 | 141,229,200 |
| 2006 | $660,740,000 | 145,468,600 | 145,468,600 |
| 2007 | $777,549,000 | 166,621,914 | 166,621,914 |
| 2008 | $694,629,000 | 135,168,284 | 135,168,284 |
| 2009 | $790,592,000 | 135,408,200 | 135,408,200 |
| 2010 | $838,614,206 | 140,330,522 | 140,330,522 |
| 2011 | $967,573,828 | 152,717,926 | 152,717,926 |
Note: Quantity represents Weight in kilograms
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