Now it's a long time since I left, but I remember that even in university towns there were very few JW's with higher education. I remember one who got PhD, and there was also a dentist.
A lot of the JW's were cleaners, but they seemed to avoid working at the university even as cleaners! Maybe the atmospere at the university was dangerous?!
This was in the 1980's. Nowdays the JW's in Sweden are losing very many of the young ones. I should guess that some 70-80% of the young ones leave the organisation.
I remember that in the 1980's there used to be some 800-1000 people baptized every year in Sweden. Last year it was only 312.