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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $171,628,535 | 1,144,334,552 | 1,144,334,552 |
| 2006 | $217,324,326 | 1,261,699,062 | 1,261,699,062 |
| 2007 | $204,705,335 | 1,152,540,423 | 1,152,540,423 |
| 2008 | $202,590,298 | 1,147,685,989 | 1,147,685,989 |
| 2009 | $131,094,969 | 739,685,108 | 739,685,108 |
| 2010 | $156,667,117 | 944,810,374 | 944,810,374 |
| 2011 | $160,359,751 | 936,543,697 | 936,543,697 |
Note: Quantity represents Weight in kilograms
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