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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $534,617,000 | 845,676,200 | 845,676,200 |
| 2006 | $602,924,000 | 786,700,000 | 786,700,000 |
| 2007 | $621,925,000 | 668,837,800 | 668,837,800 |
| 2008 | $686,664,000 | 613,287,500 | 613,287,500 |
| 2009 | $519,904,000 | 622,545,097 | 622,545,097 |
| 2010 | $547,175,356 | 621,500,600 | 621,500,600 |
| 2011 | $666,294,081 | 663,649,738 | 663,649,738 |
Note: Quantity represents Weight in kilograms
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