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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $396,969,636 | 858,738,217 | 858,738,217 |
| 2006 | $478,209,059 | 899,335,086 | 899,335,086 |
| 2007 | $579,294,778 | 916,072,938 | 916,072,938 |
| 2008 | $615,791,949 | 958,075,031 | 958,075,031 |
| 2009 | $437,869,170 | 865,138,415 | 865,138,415 |
| 2010 | $555,868,149 | 910,758,421 | 910,758,421 |
| 2011 | $583,616,967 | 855,663,468 | 855,663,468 |
Note: Quantity represents Weight in kilograms
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