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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,004,957,270 | 1,216,854,008 | 1,216,854,008 |
| 2006 | $1,196,871,139 | 1,438,993,000 | 1,438,993,000 |
| 2007 | $1,252,655,390 | 1,391,921,000 | 1,391,921,000 |
| 2008 | $1,055,147,657 | 1,039,708,141 | 1,039,708,141 |
| 2009 | $654,919,604 | 725,042,000 | 725,042,000 |
| 2010 | $651,232,077 | 774,418,762 | 774,418,762 |
| 2011 | $701,565,231 | 813,166,000 | 813,166,000 |
Note: Quantity represents Weight in kilograms
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