The first part is just a copy of the old code, whick shows the percentage number every year. So I thought that I could just copy it, and add a "go one year back and compare" statement (year=Aargang). But it says error in expression.
How do I tell QV to compare the percentage from one year with the year before?
I know that there will be no data in 2013, because it is the first year.
I have made a vMinAargang and a vMaxAargang variable, but I haven't used them (yet).