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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $371,916,747 | 48,538,383 | 48,538,383 |
| 2006 | $430,029,448 | 56,122,598 | 56,122,598 |
| 2007 | $999,030,323 | 115,045,509 | 115,045,509 |
| 2008 | $1,374,024,291 | 165,188,927 | 165,188,927 |
| 2009 | $1,096,022,007 | 121,251,851 | 121,251,851 |
| 2010 | $1,604,477,030 | 180,246,175 | 180,246,175 |
| 2011 | $1,946,809,692 | 221,212,513 | 221,212,513 |
Note: Quantity represents Weight in kilograms
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