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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $13,629 | 50,335 | 50,335 |
| 2006 | $8,033 | 24,759 | 24,759 |
| 2007 | $920,165,106 | 1,858,445,424 | 1,858,445,424 |
| 2008 | $1,241,487,317 | 1,727,980,900 | 1,727,980,900 |
| 2009 | $435,345,186 | 963,667,170 | 963,667,170 |
| 2010 | $863,925,150 | 1,938,430,071 | 1,938,430,071 |
| 2011 | $979,487,508 | 1,700,557,856 | 1,700,557,856 |
Note: Quantity represents Weight in kilograms
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