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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $645,726,325 | 3,201,419,559 | 3,201,419,559 |
| 2006 | $851,765,714 | 0 | 0 |
| 2007 | $1,093,231,979 | 2,091,386,349 | 2,091,386,349 |
| 2008 | $2,322,062,104 | 0 | 0 |
| 2009 | $1,816,331,657 | 4,380,611,840 | 4,380,611,840 |
| 2010 | $1,871,009,686 | 3,266,095,428 | 3,266,095,428 |
| 2011 | $1,696,190,765 | 2,375,672,543 | 2,375,672,543 |
Note: Quantity represents Weight in kilograms
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