| Value |
Category |
| 1 |
before 1952 |
| 2 |
1952- 1959 |
| 3 |
1960-1969 |
| 4 |
1970-1979 |
| 5 |
1980-1989 |
| 6 |
1990-1998 |
| 7 |
do not know |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
