| Value | Category | Cases | |
|---|---|---|---|
| -5 | Missing; Unknown | 0 |
0%
|
| -4 | Not asked in survey | 0 |
0%
|
| -3 | Not applicable | 0 |
0%
|
| -2 | No answer | 0 |
0%
|
| -1 | Don´t know | 0 |
0%
|
| 1917 | 1 |
0.1%
|
|
| 1919 | 1 |
0.1%
|
|
| 1920 | 1 |
0.1%
|
|
| 1921 | 3 |
0.3%
|
|
| 1922 | 1 |
0.1%
|
|
| 1923 | 2 |
0.2%
|
|
| 1924 | 2 |
0.2%
|
|
| 1926 | 2 |
0.2%
|
|
| 1927 | 1 |
0.1%
|
|
| 1928 | 3 |
0.3%
|
|
| 1929 | 4 |
0.4%
|
|
| 1930 | 11 |
1.1%
|
|
| 1931 | 9 |
0.9%
|
|
| 1932 | 3 |
0.3%
|
|
| 1933 | 5 |
0.5%
|
|
| 1934 | 5 |
0.5%
|
|
| 1935 | 6 |
0.6%
|
|
| 1936 | 4 |
0.4%
|
|
| 1937 | 7 |
0.7%
|
|
| 1938 | 9 |
0.9%
|
|
| 1939 | 5 |
0.5%
|
|
| 1940 | 5 |
0.5%
|
|
| 1941 | 11 |
1.1%
|
|
| 1942 | 7 |
0.7%
|
|
| 1943 | 5 |
0.5%
|
|
| 1944 | 5 |
0.5%
|
|
| 1945 | 5 |
0.5%
|
|
| 1946 | 6 |
0.6%
|
|
| 1947 | 8 |
0.8%
|
|
| 1948 | 15 |
1.4%
|
|
| 1949 | 15 |
1.4%
|
|
| 1950 | 9 |
0.9%
|
|
| 1951 | 10 |
1%
|
|
| 1952 | 8 |
0.8%
|
|
| 1953 | 13 |
1.2%
|
|
| 1954 | 8 |
0.8%
|
|
| 1955 | 20 |
1.9%
|
|
| 1956 | 13 |
1.2%
|
|
| 1957 | 19 |
1.8%
|
|
| 1958 | 7 |
0.7%
|
|
| 1959 | 15 |
1.4%
|
|
| 1960 | 21 |
2%
|
|
| 1961 | 20 |
1.9%
|
|
| 1962 | 21 |
2%
|
|
| 1963 | 24 |
2.3%
|
|
| 1964 | 23 |
2.2%
|
|
| 1965 | 27 |
2.6%
|
|
| 1966 | 28 |
2.7%
|
|
| 1967 | 27 |
2.6%
|
|
| 1968 | 25 |
2.4%
|
|
| 1969 | 35 |
3.4%
|
|
| 1970 | 29 |
2.8%
|
|
| 1971 | 28 |
2.7%
|
|
| 1972 | 24 |
2.3%
|
|
| 1973 | 31 |
3%
|
|
| 1974 | 17 |
1.6%
|
|
| 1975 | 28 |
2.7%
|
|
| 1976 | 29 |
2.8%
|
|
| 1977 | 21 |
2%
|
|
| 1978 | 31 |
3%
|
|
| 1979 | 37 |
3.5%
|
|
| 1980 | 36 |
3.5%
|
|
| 1981 | 39 |
3.7%
|
|
| 1982 | 35 |
3.4%
|
|
| 1983 | 40 |
3.8%
|
|
| 1984 | 42 |
4%
|
|
| 1985 | 36 |
3.5%
|