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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $50,884 | 31,600 | 31,600 |
| 2006 | $20,915 | 12,989 | 12,989 |
| 2007 | $66,898 | 389,000 | 389,000 |
| 2008 | $100,946 | 494,218 | 494,218 |
| 2009 | $56,656 | 271,240 | 271,240 |
| 2010 | $266,856 | 1,677,364 | 1,677,364 |
| 2011 | $248,139 | 2,010,672 | 2,010,672 |
Note: Quantity represents Weight in kilograms
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