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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $111,065,050 | 1,145,241,300 | 1,145,241,300 |
| 2006 | $140,214,554 | 1,355,604,500 | 1,355,604,500 |
| 2007 | $187,878,113 | 1,664,228,300 | 1,664,228,300 |
| 2008 | $225,909,608 | 1,793,542,100 | 1,793,542,100 |
| 2009 | $196,522,191 | 1,607,671,800 | 1,607,671,800 |
| 2010 | $236,141,590 | 2,238,895,500 | 2,238,895,500 |
| 2011 | $308,561,147 | 2,830,479,564 | 2,830,479,564 |
Note: Quantity represents Weight in kilograms
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