no hs diploma
9 yr diploma
10 yr diploma
technical school
university entry
lower
lower middle
middle
upper middle
upper
lt 500 dm
500-1000 dm
1000-1500 dm
1500-2000
2000-2500 dm
2500-3000 dm
3000-3500dm
3500-4000 dm
4000-4500dm
4500-5000 dm
5000-5500 dm
5500-6000 dm
6000-8000 dm
8000-10000
10000-15000
15000up
not young
young
female
male