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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $219,060,000 | 1,809,433,000 | 1,809,433,000 |
| 2006 | $312,889,000 | 2,243,931,600 | 2,243,931,600 |
| 2007 | $392,378,000 | 1,532,093,700 | 1,532,093,700 |
| 2008 | $585,474,000 | 1,859,062,000 | 1,859,062,000 |
| 2009 | $302,586,000 | 1,621,583,900 | 1,621,583,900 |
| 2010 | $384,943,000 | 1,888,988,300 | 1,888,988,300 |
| 2011 | $321,684,000 | 1,090,487,600 | 1,090,487,600 |
Note: Quantity represents Weight in kilograms
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