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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $720,706,040 | 132,528,673 | 132,528,673 |
| 2006 | $939,230,385 | 159,604,877 | 159,604,877 |
| 2007 | $1,882,830,753 | 290,422,492 | 290,422,492 |
| 2008 | $2,466,984,048 | 350,368,884 | 350,368,884 |
| 2009 | $1,965,228,624 | 285,736,941 | 285,736,941 |
| 2010 | $2,280,559,314 | 342,622,987 | 342,622,987 |
| 2011 | $2,924,233,497 | 360,428,431 | 360,428,431 |
Note: Quantity represents Weight in kilograms
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