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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $552,688,734 | 1,320,986,000 | 1,320,986,000 |
| 2006 | $827,248,921 | 1,641,300,000 | 1,641,300,000 |
| 2007 | $1,203,436,971 | 2,004,275,000 | 2,004,275,000 |
| 2009 | $2,030,931,344 | 4,011,342,360 | 4,011,342,360 |
Note: Quantity represents Weight in kilograms
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