code year value
1 2000 5
1 2000 6
1 2000 4.5
1 2000 5.3
1 2005 5.2
1 2005 6.4
1 2005 7
1 2005 7.8
2 2001 5
2 2001 6
2 2001 4.5
2 2001 5.3
2 2005 5.2
2 2005 6.6
2 2005 7.5
2 2005 8
. .
. .
. .
请问高手们如何把上列数转换成(how to the Change data above into the following data ):
code year1 value1 year2 value2
1 2000 5 2005 5.2
1 2000 6 2005 6.4
1 2000 4.5 2005 7
1 2000 5.3 2005 7.8
2 2001 5 2005 5.2
2 2001 6 2005 6.6
2 2001 4.5 2005 7.5
2 2001 5.3 2005 8
谢谢了!(Thanks a lot).