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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $511,476,071 | 2,383,212,352 | 2,383,212,352 |
| 2006 | $750,268,114 | 1,942,053,254 | 1,942,053,254 |
| 2007 | $1,340,394,283 | 3,838,104,037 | 3,838,104,037 |
| 2008 | $1,926,368,887 | 4,364,591,772 | 4,364,591,772 |
| 2009 | $1,202,557,715 | 4,192,235,845 | 4,192,235,845 |
| 2010 | $1,413,349,012 | 4,738,916,264 | 4,738,916,264 |
| 2011 | $1,772,481,711 | 4,462,033,858 | 4,462,033,858 |
Note: Quantity represents Weight in kilograms
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