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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,149,451,377 | 240,219,724 | 240,219,724 |
| 2006 | $1,232,727,626 | 167,023,417 | 167,023,417 |
| 2007 | $1,900,428,617 | 296,177,671 | 296,177,671 |
| 2008 | $1,639,767,611 | 209,325,090 | 209,325,090 |
| 2009 | $1,203,321,119 | 136,141,935 | 136,141,935 |
| 2010 | $1,710,311,323 | 208,636,943 | 208,636,943 |
| 2011 | $1,932,706,700 | 228,289,729 | 228,289,729 |
Note: Quantity represents Weight in kilograms
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