Value | Category | Cases | |
---|---|---|---|
-2 | Refusal to answer | 3 |
0.3%
|
-1 | Don't know | 35 |
3.8%
|
1900 | 1 |
0.1%
|
|
1920 | 2 |
0.2%
|
|
1924 | 1 |
0.1%
|
|
1938 | 1 |
0.1%
|
|
1942 | 3 |
0.3%
|
|
1945 | 1 |
0.1%
|
|
1946 | 1 |
0.1%
|
|
1947 | 1 |
0.1%
|
|
1950 | 6 |
0.6%
|
|
1952 | 1 |
0.1%
|
|
1955 | 1 |
0.1%
|
|
1956 | 4 |
0.4%
|
|
1958 | 2 |
0.2%
|
|
1959 | 1 |
0.1%
|
|
1960 | 3 |
0.3%
|
|
1962 | 2 |
0.2%
|
|
1964 | 3 |
0.3%
|
|
1965 | 2 |
0.2%
|
|
1966 | 3 |
0.3%
|
|
1967 | 1 |
0.1%
|
|
1969 | 1 |
0.1%
|
|
1970 | 12 |
1.3%
|
|
1971 | 3 |
0.3%
|
|
1972 | 6 |
0.6%
|
|
1974 | 4 |
0.4%
|
|
1975 | 13 |
1.4%
|
|
1976 | 1 |
0.1%
|
|
1977 | 2 |
0.2%
|
|
1978 | 8 |
0.9%
|
|
1979 | 3 |
0.3%
|
|
1980 | 16 |
1.7%
|
|
1981 | 7 |
0.8%
|
|
1982 | 11 |
1.2%
|
|
1983 | 3 |
0.3%
|
|
1984 | 5 |
0.5%
|
|
1985 | 17 |
1.8%
|
|
1986 | 19 |
2.1%
|
|
1987 | 14 |
1.5%
|
|
1988 | 10 |
1.1%
|
|
1989 | 17 |
1.8%
|
|
1990 | 44 |
4.8%
|
|
1991 | 30 |
3.2%
|
|
1992 | 41 |
4.4%
|
|
1993 | 50 |
5.4%
|
|
1994 | 54 |
5.8%
|
|
1995 | 85 |
9.2%
|
|
1996 | 65 |
7%
|
|
1997 | 67 |
7.3%
|
|
1998 | 88 |
9.5%
|
|
1999 | 69 |
7.5%
|
|
2000 | 72 |
7.8%
|
|
2001 | 9 |
1%
|
|
Sysmiss | 8 |