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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $326,526,868 | 1,478,887,968 | 1,478,887,968 |
| 2006 | $425,549,152 | 1,857,874,984 | 1,857,874,984 |
| 2007 | $264,145,790 | 1,195,787,008 | 1,195,787,008 |
| 2008 | $385,079,515 | 1,252,568,008 | 1,252,568,008 |
| 2009 | $240,690,803 | 1,216,801,000 | 1,216,801,000 |
| 2010 | $324,360,683 | 1,232,757,992 | 1,232,757,992 |
| 2011 | $421,658,132 | 1,460,637,016 | 1,460,637,016 |
Note: Quantity represents Weight in kilograms
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