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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $274,238,000 | 34,801,581 | 34,801,581 |
| 2006 | $344,088,000 | 44,132,613 | 44,132,613 |
| 2007 | $466,792,000 | 60,775,111 | 60,775,111 |
| 2008 | $557,755,000 | 72,077,231 | 72,077,231 |
| 2009 | $470,352,000 | 60,831,188 | 60,831,188 |
| 2010 | $563,657,000 | 79,480,523 | 79,480,523 |
| 2011 | $641,049,000 | 83,521,021 | 83,521,021 |
Note: Quantity represents Weight in kilograms
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