Union columns on report level

Is there a way to Union columns on Crystal Report level? Normally this handled by UNION query function on database level. But my data source in SAP BW DSO tables, which does not provide the ability to write freehand code.

Sample-

Source table -

YEAR      Field1             Field2

2010          1000                 9000

2011          2000                7000

2012          3000                 5000

OUTPUT

YEAR      Combined

2010          1000

2011          2000

2012          3000

2010          9000

2011          7000

2012          5000