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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $684,666,495 | 87,947,882 | 87,947,882 |
| 2006 | $879,092,438 | 96,453,547 | 96,453,547 |
| 2007 | $1,290,711,400 | 137,395,947 | 137,395,947 |
| 2008 | $1,335,422,063 | 112,452,668 | 112,452,668 |
| 2009 | $1,542,117,218 | 88,259,748 | 88,259,748 |
| 2010 | $1,339,288,958 | 102,682,390 | 102,682,390 |
| 2011 | $1,572,187,444 | 106,242,324 | 106,242,324 |
Note: Quantity represents Weight in kilograms
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