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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $447,352,696 | 1,357,922 | 1,357,922 |
| 2006 | $580,750,862 | 1,571,852 | 1,571,852 |
| 2007 | $613,095,613 | 1,509,911 | 1,509,911 |
| 2008 | $576,048,621 | 1,342,960 | 1,342,960 |
| 2009 | $569,272,325 | 1,009,253 | 1,009,253 |
| 2010 | $810,069,631 | 1,262,121 | 1,262,121 |
| 2011 | $840,765,008 | 1,219,067 | 1,219,067 |
Note: Quantity represents Weight in kilograms
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