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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $353,143,000 | 1,466,194,300 | 1,466,194,300 |
| 2006 | $322,726,000 | 1,343,735,000 | 1,343,735,000 |
| 2007 | $388,675,000 | 1,282,453,700 | 1,282,453,700 |
| 2008 | $628,488,000 | 1,464,448,500 | 1,464,448,500 |
| 2009 | $543,536,000 | 1,322,351,500 | 1,322,351,500 |
| 2010 | $494,954,658 | 1,271,991,500 | 1,271,991,500 |
| 2011 | $556,424,799 | 1,306,117,447 | 1,306,117,447 |
Note: Quantity represents Weight in kilograms
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