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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $772,356,250 | 482,930,920 | 482,930,920 |
| 2006 | $966,042,345 | 580,075,100 | 580,075,100 |
| 2007 | $1,233,485,656 | 620,102,667 | 620,102,667 |
| 2008 | $1,516,377,316 | 670,561,691 | 670,561,691 |
| 2009 | $1,211,576,832 | 546,432,268 | 546,432,268 |
| 2010 | $1,040,123,525 | 539,896,848 | 539,896,848 |
| 2011 | $1,390,388,675 | 693,525,952 | 693,525,952 |
Note: Quantity represents Weight in kilograms
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