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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $733,893,917 | 407,112,848 | 407,112,848 |
| 2006 | $800,372,499 | 505,721,103 | 505,721,103 |
| 2007 | $811,339,809 | 474,744,185 | 474,744,185 |
| 2008 | $990,854,937 | 411,975,538 | 411,975,538 |
| 2009 | $645,611,675 | 279,514,905 | 279,514,905 |
| 2010 | $777,755,309 | 351,706,090 | 351,706,090 |
| 2011 | $880,087,089 | 361,573,646 | 361,573,646 |
Note: Quantity represents Weight in kilograms
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