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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,116,143,257 | 214,811,517 | 214,811,517 |
| 2006 | $1,151,729,881 | 238,615,983 | 238,615,983 |
| 2007 | $1,645,329,075 | 260,064,839 | 260,064,839 |
| 2008 | $1,534,703,051 | 234,140,272 | 234,140,272 |
| 2009 | $1,335,982,520 | 261,028,810 | 261,028,810 |
| 2010 | $1,804,450,902 | 264,861,041 | 264,861,041 |
| 2011 | $2,618,752,432 | 263,220,957 | 263,220,957 |
Note: Quantity represents Weight in kilograms
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