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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $557,865,000 | 613,957,700 | 613,957,700 |
| 2006 | $832,459,000 | 800,806,400 | 800,806,400 |
| 2007 | $947,322,000 | 842,713,000 | 842,713,000 |
| 2008 | $1,006,930,000 | 848,461,800 | 848,461,800 |
| 2009 | $961,007,000 | 729,967,800 | 729,967,800 |
| 2010 | $945,892,265 | 836,185,900 | 836,185,900 |
| 2011 | $969,477,636 | 701,301,404 | 701,301,404 |
Note: Quantity represents Weight in kilograms
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