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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $579,956,000 | 223,794,400 | 223,794,400 |
| 2006 | $706,400,000 | 266,162,277 | 266,162,277 |
| 2007 | $916,457,000 | 286,756,600 | 286,756,600 |
| 2008 | $1,122,323,000 | 292,761,300 | 292,761,300 |
| 2009 | $933,981,000 | 295,700,700 | 295,700,700 |
| 2010 | $1,015,557,663 | 321,686,800 | 321,686,800 |
| 2011 | $1,302,474,463 | 363,445,285 | 363,445,285 |
Note: Quantity represents Weight in kilograms
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