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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,039,598,340 | 6,843,059,484 | 6,843,059,484 |
| 2006 | $830,807,310 | 5,158,050,980 | 5,158,050,980 |
| 2007 | $904,666,546 | 3,313,311,846 | 3,313,311,846 |
| 2008 | $1,314,169,934 | 4,266,463,838 | 4,266,463,838 |
| 2009 | $1,271,916,602 | 6,319,376,081 | 6,319,376,081 |
| 2010 | $942,294,088 | 4,122,796,686 | 4,122,796,686 |
Note: Quantity represents Weight in kilograms
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