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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,095,102,478 | 677,121,285 | 677,121,285 |
| 2006 | $1,250,838,525 | 680,119,553 | 680,119,553 |
| 2007 | $1,238,949,675 | 609,837,086 | 609,837,086 |
| 2008 | $939,801,845 | 382,680,564 | 382,680,564 |
| 2009 | $921,985,106 | 353,891,848 | 353,891,848 |
| 2010 | $1,123,927,291 | 414,191,260 | 414,191,260 |
| 2011 | $1,226,206,273 | 405,776,409 | 405,776,409 |
Note: Quantity represents Weight in kilograms
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