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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,429,690,860 | 79,737,360 | 79,737,360 |
| 2006 | $1,628,227,777 | 58,091,295 | 58,091,295 |
| 2007 | $2,551,363,292 | 0 | 0 |
| 2008 | $2,776,646,655 | 0 | 0 |
| 2009 | $2,048,692,085 | 45,809,746 | 45,809,746 |
| 2010 | $3,331,171,778 | 9,485,625 | 9,485,625 |
| 2011 | $3,997,326,155 | 10,737,330 | 10,737,330 |
Note: Quantity represents Weight in kilograms
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