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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $13,853,512 | 243,628,920 | 243,628,920 |
| 2006 | $53,161,130 | 1,992,471,347 | 1,992,471,347 |
| 2007 | $99,512,778 | 4,659,809,438 | 4,659,809,438 |
| 2008 | $47,083,546 | 997,075,035 | 997,075,035 |
| 2009 | $21,424,355 | 75,552,350 | 75,552,350 |
| 2010 | $23,540,836 | 87,368,956 | 87,368,956 |
| 2011 | $28,275,229 | 89,313,787 | 89,313,787 |
Note: Quantity represents Weight in kilograms
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