Value | Category |
---|---|
1957 | |
1958 | |
1960 | |
1961 | |
1962 | |
1963 | |
1964 | |
1965 | |
1966 | |
1967 | |
1968 | |
1969 | |
1970 | |
1971 | |
1972 | |
1973 | |
1974 | |
1975 | |
1976 | |
1977 | |
1978 | |
1979 | |
1980 | |
1981 | |
1982 | |
1983 | |
1984 | |
1985 | |
1986 | |
1987 | |
1988 | |
1989 | |
1990 | |
1991 | |
2222 | never |
9898 | doesn t remember |
9998 | |
9999 | no response |
Sysmiss |