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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,962,031,000 | 680,958,141 | 680,958,141 |
| 2006 | $2,284,125,000 | 734,690,146 | 734,690,146 |
| 2007 | $2,833,490,000 | 776,391,614 | 776,391,614 |
| 2008 | $3,485,099,000 | 835,274,909 | 835,274,909 |
| 2009 | $2,246,183,000 | 551,347,527 | 551,347,527 |
| 2010 | $2,581,873,666 | 677,219,490 | 677,219,490 |
| 2011 | $3,308,205,290 | 827,545,097 | 827,545,097 |
Note: Quantity represents Weight in kilograms
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