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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $817,128,877 | 3,792,073,976 | 3,792,073,976 |
| 2006 | $872,660,991 | 4,019,271,024 | 4,019,271,024 |
| 2007 | $915,361,261 | 3,716,663,048 | 3,716,663,048 |
| 2008 | $1,547,484,615 | 4,959,394,827 | 4,959,394,827 |
| 2009 | $952,387,519 | 3,047,756,976 | 3,047,756,976 |
| 2010 | $1,169,368,351 | 3,314,280,016 | 3,314,280,016 |
| 2011 | $1,930,233,087 | 3,824,024,984 | 3,824,024,984 |
Note: Quantity represents Weight in kilograms
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