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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $625,131,909 | 605,538,974 | 605,538,974 |
| 2006 | $776,207,663 | 628,485,853 | 628,485,853 |
| 2007 | $1,040,795,100 | 730,672,405 | 730,672,405 |
| 2008 | $937,709,419 | 560,929,385 | 560,929,385 |
| 2009 | $738,119,672 | 649,781,271 | 649,781,271 |
| 2010 | $934,019,369 | 743,180,092 | 743,180,092 |
| 2011 | $1,094,604,196 | 716,881,681 | 716,881,681 |
Note: Quantity represents Weight in kilograms
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