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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $175,189,000 | 196,579,600 | 196,579,600 |
| 2006 | $203,154,000 | 200,591,400 | 200,591,400 |
| 2007 | $196,125,000 | 190,544,400 | 190,544,400 |
| 2008 | $197,844,000 | 180,597,000 | 180,597,000 |
| 2009 | $223,104,000 | 178,456,800 | 178,456,800 |
| 2010 | $210,986,371 | 192,512,900 | 192,512,900 |
| 2011 | $235,034,283 | 174,420,616 | 174,420,616 |
Note: Quantity represents Weight in kilograms
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