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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $14,912,861 | 4,519,342,405 | 4,519,342,405 |
| 2006 | $11,995,078 | 3,789,285,403 | 3,789,285,403 |
| 2007 | $16,020,820 | 4,504,155,617 | 4,504,155,617 |
| 2008 | $17,527,123 | 4,554,888,071 | 4,554,888,071 |
| 2009 | $7,381,333 | 1,804,282,036 | 1,804,282,036 |
| 2010 | $4,018,104 | 868,007,577 | 868,007,577 |
| 2011 | $6,389,596 | 1,049,422,075 | 1,049,422,075 |
Note: Quantity represents Weight in kilograms
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