| Value | Category | Cases | |
|---|---|---|---|
| -4 | Not asked in survey | 0 |
0%
|
| -3 | Not applicable | 0 |
0%
|
| -2 | No answer; Unknown | 0 |
0%
|
| -1 | Dont know | 0 |
0%
|
| 1900 | 1 |
0.1%
|
|
| 1901 | 1 |
0.1%
|
|
| 1903 | 5 |
0.5%
|
|
| 1904 | 1 |
0.1%
|
|
| 1905 | 3 |
0.3%
|
|
| 1906 | 3 |
0.3%
|
|
| 1908 | 2 |
0.2%
|
|
| 1909 | 6 |
0.6%
|
|
| 1910 | 7 |
0.7%
|
|
| 1911 | 3 |
0.3%
|
|
| 1912 | 8 |
0.8%
|
|
| 1913 | 5 |
0.5%
|
|
| 1914 | 5 |
0.5%
|
|
| 1915 | 9 |
0.9%
|
|
| 1916 | 7 |
0.7%
|
|
| 1917 | 19 |
1.9%
|
|
| 1918 | 15 |
1.5%
|
|
| 1919 | 14 |
1.4%
|
|
| 1920 | 24 |
2.4%
|
|
| 1921 | 15 |
1.5%
|
|
| 1922 | 17 |
1.7%
|
|
| 1923 | 4 |
0.4%
|
|
| 1924 | 10 |
1%
|
|
| 1925 | 8 |
0.8%
|
|
| 1926 | 10 |
1%
|
|
| 1927 | 8 |
0.8%
|
|
| 1928 | 14 |
1.4%
|
|
| 1929 | 21 |
2.1%
|
|
| 1930 | 29 |
2.9%
|
|
| 1931 | 9 |
0.9%
|
|
| 1932 | 12 |
1.2%
|
|
| 1933 | 12 |
1.2%
|
|
| 1934 | 17 |
1.7%
|
|
| 1935 | 15 |
1.5%
|
|
| 1936 | 14 |
1.4%
|
|
| 1937 | 16 |
1.6%
|
|
| 1938 | 19 |
1.9%
|
|
| 1939 | 21 |
2.1%
|
|
| 1940 | 14 |
1.4%
|
|
| 1941 | 13 |
1.3%
|
|
| 1942 | 16 |
1.6%
|
|
| 1943 | 9 |
0.9%
|
|
| 1944 | 16 |
1.6%
|
|
| 1945 | 15 |
1.5%
|
|
| 1946 | 21 |
2.1%
|
|
| 1947 | 17 |
1.7%
|
|
| 1948 | 22 |
2.2%
|
|
| 1949 | 26 |
2.6%
|
|
| 1950 | 42 |
4.2%
|
|
| 1951 | 14 |
1.4%
|
|
| 1952 | 33 |
3.3%
|
|
| 1953 | 18 |
1.8%
|
|
| 1954 | 21 |
2.1%
|
|
| 1955 | 33 |
3.3%
|
|
| 1956 | 18 |
1.8%
|
|
| 1957 | 26 |
2.6%
|
|
| 1958 | 22 |
2.2%
|
|
| 1959 | 27 |
2.7%
|
|
| 1960 | 38 |
3.8%
|
|
| 1961 | 31 |
3.1%
|
|
| 1962 | 29 |
2.9%
|
|
| 1963 | 24 |
2.4%
|
|
| 1964 | 18 |
1.8%
|
|
| 1965 | 21 |
2.1%
|
|
| 1966 | 9 |
0.9%
|
|
| 1967 | 2 |
0.2%
|
|
| 1968 | 1 |
0.1%
|