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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,844,796,000 | 143,724,423 | 143,724,423 |
| 2006 | $2,384,417,000 | 169,698,170 | 169,698,170 |
| 2007 | $2,315,466,000 | 160,601,571 | 160,601,571 |
| 2008 | $2,452,113,000 | 157,278,334 | 157,278,334 |
| 2009 | $1,644,760,000 | 112,227,560 | 112,227,560 |
| 2010 | $1,948,257,783 | 150,440,707 | 150,440,707 |
| 2011 | $2,511,246,295 | 177,931,040 | 177,931,040 |
Note: Quantity represents Weight in kilograms
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