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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $436,620,118 | 34,912,082 | 34,912,082 |
| 2006 | $458,643,020 | 30,287,911 | 30,287,911 |
| 2007 | $532,756,544 | 36,750,246 | 36,750,246 |
| 2008 | $601,617,915 | 0 | 0 |
| 2009 | $553,183,844 | 29,473,388 | 29,473,388 |
| 2010 | $698,846,947 | 34,305,962 | 34,305,962 |
| 2011 | $783,288,490 | 40,287,522 | 40,287,522 |
Note: Quantity represents Weight in kilograms
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