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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $641,605,105 | 8,240,515 | 8,240,515 |
| 2006 | $528,140,807 | 9,094,850 | 9,094,850 |
| 2007 | $628,184,090 | 7,203,717 | 7,203,717 |
| 2008 | $712,897,345 | 8,485,455 | 8,485,455 |
| 2009 | $532,939,471 | 9,539,239 | 9,539,239 |
| 2010 | $421,288,570 | 8,555,465 | 8,555,465 |
| 2011 | $320,116,681 | 6,901,480 | 6,901,480 |
Note: Quantity represents Weight in kilograms
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