Your best bet may be to upload another dimension which deals which allows a single source value to appear in many periods.
The table would be something like:
This way any value that exists in Saldi 03 is associated with cumulative periods 01, 02 and 03.
You may run into some issues with QlikView treating some of the values as strings and others as text - causing the associations not to work but you can probably work around this. You also have the issue that you could potentially have many years - do you know how you will want to accumulate this?
The accumulation table could be built in a nested loop, or driven from a spreadsheet with the join values.
Hope that gives you some pointers.