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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,037,297,915 | 38,410,278 | 38,410,278 |
| 2006 | $1,243,271,879 | 46,037,322 | 46,037,322 |
| 2007 | $1,396,754,074 | 35,398,471 | 35,398,471 |
| 2008 | $1,633,210,056 | 36,796,654 | 36,796,654 |
| 2009 | $1,475,244,984 | 29,184,808 | 29,184,808 |
| 2010 | $1,848,180,133 | 171,968,964 | 171,968,964 |
| 2011 | $2,320,050,637 | 177,102,509 | 177,102,509 |
Note: Quantity represents Weight in kilograms
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