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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $289,664,215 | 387,698,895 | 387,698,895 |
| 2006 | $490,522,822 | 484,131,008 | 484,131,008 |
| 2007 | $1,050,742,853 | 833,333,726 | 833,333,726 |
| 2008 | $721,896,524 | 535,358,690 | 535,358,690 |
| 2009 | $711,284,682 | 596,600,586 | 596,600,586 |
| 2010 | $542,477,039 | 549,685,854 | 549,685,854 |
| 2011 | $758,399,318 | 657,486,231 | 657,486,231 |
Note: Quantity represents Weight in kilograms
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