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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $353,041,492 | 473,997,168 | 473,997,168 |
| 2006 | $240,145,694 | 300,535,122 | 300,535,122 |
| 2007 | $325,376,970 | 402,174,390 | 402,174,390 |
| 2008 | $252,069,829 | 284,296,285 | 284,296,285 |
| 2009 | $196,761,444 | 364,044,268 | 364,044,268 |
| 2010 | $232,198,594 | 280,232,260 | 280,232,260 |
| 2011 | $509,964,733 | 489,805,851 | 489,805,851 |
Note: Quantity represents Weight in kilograms
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