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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $368,849,728 | 161,525,731 | 161,525,731 |
| 2006 | $475,661,316 | 213,240,393 | 213,240,393 |
| 2007 | $313,588,167 | 101,523,788 | 101,523,788 |
| 2008 | $394,331,334 | 103,419,152 | 103,419,152 |
| 2009 | $348,271,758 | 147,023,978 | 147,023,978 |
| 2010 | $459,580,576 | 129,134,829 | 129,134,829 |
| 2011 | $843,459,460 | 202,018,823 | 202,018,823 |
Note: Quantity represents Weight in kilograms
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