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| Year | Trade Value | Weight (kg) | Quantity |
| 2006 | $1,047,839,088 | 2,069,862,000 | 2,069,862,000 |
| 2007 | $1,056,363,480 | 1,758,349,000 | 1,758,349,000 |
| 2008 | $1,512,931,512 | 2,001,569 | 2,001,569 |
| 2009 | $880,806,334 | 1,737,158 | 1,737,158 |
Note: Quantity represents Weight in kilograms
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