| Value | Category | Cases | |
|---|---|---|---|
| 1911 | 1911 | 2 |
0.1%
|
| 1913 | 1913 | 2 |
0.1%
|
| 1914 | 1914 | 1 |
0%
|
| 1915 | 1915 | 4 |
0.2%
|
| 1916 | 1916 | 5 |
0.2%
|
| 1917 | 1917 | 1 |
0%
|
| 1918 | 1918 | 5 |
0.2%
|
| 1919 | 1919 | 5 |
0.2%
|
| 1920 | 1920 | 11 |
0.5%
|
| 1921 | 1921 | 8 |
0.4%
|
| 1922 | 1922 | 11 |
0.5%
|
| 1923 | 1923 | 14 |
0.7%
|
| 1924 | 1924 | 11 |
0.5%
|
| 1925 | 1925 | 15 |
0.7%
|
| 1926 | 1926 | 14 |
0.7%
|
| 1927 | 1927 | 18 |
0.8%
|
| 1928 | 1928 | 28 |
1.3%
|
| 1929 | 1929 | 17 |
0.8%
|
| 1930 | 1930 | 21 |
1%
|
| 1931 | 1931 | 20 |
0.9%
|
| 1932 | 1932 | 25 |
1.2%
|
| 1933 | 1933 | 23 |
1.1%
|
| 1934 | 1934 | 21 |
1%
|
| 1935 | 1935 | 20 |
0.9%
|
| 1936 | 1936 | 16 |
0.7%
|
| 1937 | 1937 | 28 |
1.3%
|
| 1938 | 1938 | 29 |
1.4%
|
| 1939 | 1939 | 31 |
1.4%
|
| 1940 | 1940 | 24 |
1.1%
|
| 1941 | 1941 | 23 |
1.1%
|
| 1942 | 1942 | 34 |
1.6%
|
| 1943 | 1943 | 40 |
1.9%
|
| 1944 | 1944 | 26 |
1.2%
|
| 1945 | 1945 | 40 |
1.9%
|
| 1946 | 1946 | 32 |
1.5%
|
| 1947 | 1947 | 43 |
2%
|
| 1948 | 1948 | 40 |
1.9%
|
| 1949 | 1949 | 33 |
1.5%
|
| 1950 | 1950 | 51 |
2.4%
|
| 1951 | 1951 | 36 |
1.7%
|
| 1952 | 1952 | 36 |
1.7%
|
| 1953 | 1953 | 49 |
2.3%
|
| 1954 | 1954 | 36 |
1.7%
|
| 1955 | 1955 | 29 |
1.4%
|
| 1956 | 1956 | 36 |
1.7%
|
| 1957 | 1957 | 42 |
2%
|
| 1958 | 1958 | 41 |
1.9%
|
| 1959 | 1959 | 40 |
1.9%
|
| 1960 | 1960 | 48 |
2.2%
|
| 1961 | 1961 | 45 |
2.1%
|
| 1962 | 1962 | 46 |
2.1%
|
| 1963 | 1963 | 67 |
3.1%
|
| 1964 | 1964 | 45 |
2.1%
|
| 1965 | 1965 | 36 |
1.7%
|
| 1966 | 1966 | 38 |
1.8%
|
| 1967 | 1967 | 36 |
1.7%
|
| 1968 | 1968 | 29 |
1.4%
|
| 1969 | 1969 | 42 |
2%
|
| 1970 | 1970 | 42 |
2%
|
| 1971 | 1971 | 34 |
1.6%
|
| 1972 | 1972 | 31 |
1.4%
|
| 1973 | 1973 | 27 |
1.3%
|
| 1974 | 1974 | 32 |
1.5%
|
| 1975 | 1975 | 26 |
1.2%
|
| 1976 | 1976 | 28 |
1.3%
|
| 1977 | 1977 | 31 |
1.4%
|
| 1978 | 1978 | 38 |
1.8%
|
| 1979 | 1979 | 29 |
1.4%
|
| 1980 | 1980 | 26 |
1.2%
|
| 1981 | 1981 | 24 |
1.1%
|
| 1982 | 1982 | 31 |
1.4%
|
| 1983 | 1983 | 33 |
1.5%
|
| 1984 | 1984 | 22 |
1%
|
| 1985 | 1985 | 33 |
1.5%
|
| 1986 | 1986 | 33 |
1.5%
|
| 1987 | 1987 | 38 |
1.8%
|
| 1988 | 1988 | 15 |
0.7%
|
| 1989 | 1989 | 1 |
0%
|
| -5 | Missing; Not asked by the interviewer | 0 | |
| -4 | Not asked | 0 | |
| -3 | Not applicable | 0 | |
| -2 | No answer | 21 | |
| -1 | Don´t know | 0 |