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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $463,859,664 | 318,107,858 | 318,107,858 |
| 2006 | $490,668,328 | 335,759,978 | 335,759,978 |
| 2007 | $514,507,367 | 320,711,284 | 320,711,284 |
| 2008 | $565,123,843 | 202,876,825 | 202,876,825 |
| 2009 | $557,340,753 | 308,755,224 | 308,755,224 |
| 2010 | $601,826,507 | 331,927,211 | 331,927,211 |
| 2011 | $686,065,058 | 358,361,291 | 358,361,291 |
Note: Quantity represents Weight in kilograms
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