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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,752,048,609 | 20,203,374 | 20,203,374 |
| 2006 | $2,222,786,878 | 14,277,833 | 14,277,833 |
| 2007 | $3,322,378,305 | 23,999,564 | 23,999,564 |
| 2008 | $5,052,871,802 | 40,274,655 | 40,274,655 |
| 2009 | $216,749,606 | 4,526,094 | 4,526,094 |
| 2010 | $351,111,863 | 10,928,560 | 10,928,560 |
| 2011 | $254,283,619 | 7,904,861 | 7,904,861 |
Note: Quantity represents Weight in kilograms
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