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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,310,891,092 | 926,627,722 | 926,627,722 |
| 2006 | $1,646,510,550 | 815,022,621 | 815,022,621 |
| 2007 | $1,471,091,528 | 692,210,464 | 692,210,464 |
| 2008 | $2,362,239,781 | 1,065,690,559 | 1,065,690,559 |
| 2009 | $1,093,584,280 | 551,151,485 | 551,151,485 |
| 2010 | $2,507,980,415 | 783,406,447 | 783,406,447 |
| 2011 | $4,155,015,038 | 851,280,521 | 851,280,521 |
Note: Quantity represents Weight in kilograms
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