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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,484,548,334 | 15,728,943 | 15,728,943 |
| 2006 | $1,278,147,033 | 17,581,509 | 17,581,509 |
| 2007 | $1,550,285,308 | 19,177,237 | 19,177,237 |
| 2008 | $1,235,127,412 | 14,053,823 | 14,053,823 |
| 2009 | $1,315,864,723 | 12,971,413 | 12,971,413 |
| 2010 | $1,473,258,603 | 18,566,159 | 18,566,159 |
| 2011 | $1,703,541,501 | 16,804,248 | 16,804,248 |
Note: Quantity represents Weight in kilograms
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