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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $433,111,449 | 1,043,525,008 | 1,043,525,008 |
| 2006 | $1,149,084,800 | 1,125,370,787 | 1,125,370,787 |
| 2007 | $1,226,653,439 | 1,104,966,661 | 1,104,966,661 |
| 2008 | $637,135,379 | 1,163,449,016 | 1,163,449,016 |
| 2009 | $470,265,071 | 886,072,024 | 886,072,024 |
| 2010 | $716,837,911 | 990,161,008 | 990,161,008 |
| 2011 | $711,600,277 | 884,685,992 | 884,685,992 |
Note: Quantity represents Weight in kilograms
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