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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $680,122,201 | 427,473,719 | 427,473,719 |
| 2006 | $547,067,974 | 289,855,320 | 289,855,320 |
| 2007 | $233,997,443 | 111,363,161 | 111,363,161 |
| 2008 | $234,034,532 | 121,642,189 | 121,642,189 |
| 2009 | $2,335,078,205 | 1,496,092,831 | 1,496,092,831 |
| 2010 | $508,733,359 | 229,863,399 | 229,863,399 |
| 2011 | $563,267,929 | 225,043,517 | 225,043,517 |
Note: Quantity represents Weight in kilograms
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