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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $318,020,000 | 157,640,900 | 157,640,900 |
| 2006 | $404,985,000 | 170,482,900 | 170,482,900 |
| 2007 | $463,009,000 | 152,529,400 | 152,529,400 |
| 2008 | $582,789,000 | 166,755,175 | 166,755,175 |
| 2009 | $453,454,000 | 141,488,300 | 141,488,300 |
| 2010 | $446,107,921 | 200,074,100 | 200,074,100 |
| 2011 | $592,229,942 | 243,085,310 | 243,085,310 |
Note: Quantity represents Weight in kilograms
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