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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $348,044,000 | 812,049,700 | 812,049,700 |
| 2006 | $446,315,000 | 961,904,000 | 961,904,000 |
| 2007 | $604,458,000 | 1,125,517,700 | 1,125,517,700 |
| 2008 | $638,065,000 | 880,259,200 | 880,259,200 |
| 2009 | $571,483,000 | 918,265,200 | 918,265,200 |
| 2010 | $738,108,458 | 1,167,967,300 | 1,167,967,300 |
| 2011 | $747,542,716 | 990,123,889 | 990,123,889 |
Note: Quantity represents Weight in kilograms
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