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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,341,231,000 | 578,513,600 | 578,513,600 |
| 2006 | $1,538,185,000 | 637,348,629 | 637,348,629 |
| 2007 | $1,904,857,000 | 699,614,200 | 699,614,200 |
| 2008 | $2,293,032,000 | 737,818,800 | 737,818,800 |
| 2009 | $2,090,852,000 | 721,229,445 | 721,229,445 |
| 2010 | $2,163,586,513 | 804,474,700 | 804,474,700 |
| 2011 | $2,497,800,947 | 848,968,116 | 848,968,116 |
Note: Quantity represents Weight in kilograms
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