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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,665,912,042 | 244,871,382 | 244,871,382 |
| 2006 | $1,878,647,243 | 280,385,077 | 280,385,077 |
| 2007 | $2,067,496,041 | 295,214,666 | 295,214,666 |
| 2008 | $1,919,308,661 | 224,771,360 | 224,771,360 |
| 2009 | $1,736,257,576 | 268,919,073 | 268,919,073 |
| 2010 | $2,159,247,649 | 326,586,681 | 326,586,681 |
| 2011 | $2,150,369,510 | 294,481,987 | 294,481,987 |
Note: Quantity represents Weight in kilograms
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