Value | Category | Cases | |
---|---|---|---|
-2 | Refusal to answer | 1 |
0.4%
|
-1 | Don't know | 20 |
7.1%
|
0 | 6 |
2.1%
|
|
1904 | 1 |
0.4%
|
|
1930 | 2 |
0.7%
|
|
1934 | 1 |
0.4%
|
|
1937 | 1 |
0.4%
|
|
1938 | 1 |
0.4%
|
|
1940 | 5 |
1.8%
|
|
1942 | 1 |
0.4%
|
|
1946 | 1 |
0.4%
|
|
1948 | 3 |
1.1%
|
|
1949 | 1 |
0.4%
|
|
1950 | 7 |
2.5%
|
|
1951 | 1 |
0.4%
|
|
1953 | 1 |
0.4%
|
|
1954 | 1 |
0.4%
|
|
1955 | 4 |
1.4%
|
|
1956 | 2 |
0.7%
|
|
1957 | 2 |
0.7%
|
|
1958 | 3 |
1.1%
|
|
1959 | 1 |
0.4%
|
|
1960 | 9 |
3.2%
|
|
1961 | 3 |
1.1%
|
|
1962 | 4 |
1.4%
|
|
1964 | 3 |
1.1%
|
|
1965 | 3 |
1.1%
|
|
1966 | 2 |
0.7%
|
|
1967 | 1 |
0.4%
|
|
1969 | 2 |
0.7%
|
|
1970 | 15 |
5.3%
|
|
1971 | 3 |
1.1%
|
|
1972 | 2 |
0.7%
|
|
1974 | 3 |
1.1%
|
|
1975 | 1 |
0.4%
|
|
1977 | 2 |
0.7%
|
|
1978 | 4 |
1.4%
|
|
1979 | 1 |
0.4%
|
|
1980 | 14 |
5%
|
|
1981 | 4 |
1.4%
|
|
1982 | 4 |
1.4%
|
|
1983 | 1 |
0.4%
|
|
1984 | 3 |
1.1%
|
|
1985 | 10 |
3.5%
|
|
1986 | 5 |
1.8%
|
|
1987 | 2 |
0.7%
|
|
1988 | 2 |
0.7%
|
|
1990 | 13 |
4.6%
|
|
1991 | 8 |
2.8%
|
|
1992 | 8 |
2.8%
|
|
1993 | 9 |
3.2%
|
|
1994 | 10 |
3.5%
|
|
1995 | 16 |
5.7%
|
|
1996 | 13 |
4.6%
|
|
1997 | 11 |
3.9%
|
|
1998 | 12 |
4.3%
|
|
1999 | 7 |
2.5%
|
|
2000 | 6 |
2.1%
|
|
Sysmiss | 2351 |