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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $145,462,000 | 523,847,800 | 523,847,800 |
| 2006 | $160,319,000 | 577,891,600 | 577,891,600 |
| 2007 | $200,411,000 | 506,894,500 | 506,894,500 |
| 2008 | $295,991,000 | 523,130,800 | 523,130,800 |
| 2009 | $222,727,000 | 544,269,800 | 544,269,800 |
| 2010 | $217,400,777 | 621,372,900 | 621,372,900 |
| 2011 | $283,137,266 | 610,286,945 | 610,286,945 |
Note: Quantity represents Weight in kilograms
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