Value | Category | Cases | |
---|---|---|---|
-2 | No answer | 3 |
0.2%
|
1925 | 1 |
0.1%
|
|
1932 | 1 |
0.1%
|
|
1935 | 1 |
0.1%
|
|
1937 | 2 |
0.2%
|
|
1938 | 4 |
0.3%
|
|
1939 | 6 |
0.5%
|
|
1940 | 4 |
0.3%
|
|
1942 | 4 |
0.3%
|
|
1943 | 6 |
0.5%
|
|
1944 | 10 |
0.8%
|
|
1945 | 4 |
0.3%
|
|
1946 | 6 |
0.5%
|
|
1947 | 6 |
0.5%
|
|
1948 | 7 |
0.6%
|
|
1949 | 14 |
1.2%
|
|
1950 | 9 |
0.7%
|
|
1951 | 11 |
0.9%
|
|
1952 | 8 |
0.7%
|
|
1953 | 11 |
0.9%
|
|
1954 | 14 |
1.2%
|
|
1955 | 8 |
0.7%
|
|
1956 | 16 |
1.3%
|
|
1957 | 15 |
1.2%
|
|
1958 | 12 |
1%
|
|
1959 | 33 |
2.7%
|
|
1960 | 11 |
0.9%
|
|
1961 | 15 |
1.2%
|
|
1962 | 15 |
1.2%
|
|
1963 | 18 |
1.5%
|
|
1964 | 22 |
1.8%
|
|
1965 | 28 |
2.3%
|
|
1966 | 23 |
1.9%
|
|
1967 | 25 |
2.1%
|
|
1968 | 11 |
0.9%
|
|
1969 | 42 |
3.5%
|
|
1970 | 21 |
1.7%
|
|
1971 | 24 |
2%
|
|
1972 | 11 |
0.9%
|
|
1973 | 18 |
1.5%
|
|
1974 | 28 |
2.3%
|
|
1975 | 37 |
3.1%
|
|
1976 | 23 |
1.9%
|
|
1977 | 28 |
2.3%
|
|
1978 | 11 |
0.9%
|
|
1979 | 44 |
3.6%
|
|
1980 | 27 |
2.2%
|
|
1981 | 24 |
2%
|
|
1982 | 26 |
2.2%
|
|
1983 | 20 |
1.7%
|
|
1984 | 20 |
1.7%
|
|
1985 | 19 |
1.6%
|
|
1986 | 33 |
2.7%
|
|
1987 | 28 |
2.3%
|
|
1988 | 21 |
1.7%
|
|
1989 | 33 |
2.7%
|
|
1990 | 30 |
2.5%
|
|
1991 | 32 |
2.6%
|
|
1992 | 28 |
2.3%
|
|
1993 | 29 |
2.4%
|
|
1994 | 22 |
1.8%
|
|
1995 | 24 |
2%
|
|
1996 | 24 |
2%
|
|
1997 | 23 |
1.9%
|
|
1998 | 20 |
1.7%
|
|
1999 | 25 |
2.1%
|
|
2000 | 12 |
1%
|
|
2001 | 17 |
1.4%
|