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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $364,007,408 | 24,815,477 | 24,815,477 |
| 2006 | $432,799,904 | 28,610,199 | 28,610,199 |
| 2007 | $406,957,960 | 25,993,978 | 25,993,978 |
| 2008 | $477,069,904 | 29,749,719 | 29,749,719 |
| 2009 | $333,405,114 | 35,762,467 | 35,762,467 |
| 2010 | $503,629,154 | 28,356,292 | 28,356,292 |
| 2011 | $824,953,692 | 36,489,302 | 36,489,302 |
Note: Quantity represents Weight in kilograms
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