Value |
Category |
1937 |
1937 or earlier |
1938 |
1938 |
1939 |
1939 |
1940 |
1940 |
1941 |
1941 |
1942 |
1942 |
1943 |
1943 |
1944 |
1944 |
1945 |
1945 |
1946 |
1946 |
1947 |
1947 |
1948 |
1948 |
1949 |
1949 |
1950 |
1950 |
1951 |
1951 |
1952 |
1952 |
1953 |
1953 |
1954 |
1954 |
1955 |
1955 |
1956 |
1956 |
1957 |
1957 |
1958 |
1958 |
1959 |
1959 |
1960 |
1960 |
1961 |
1961 |
1962 |
1962 |
1963 |
1963 |
1964 |
1964 |
1965 |
1965 |
1966 |
1966 |
1967 |
1967 |
1968 |
1968 |
1969 |
1969 |
1970 |
1970 |
1971 |
1971 |
1972 |
1972 |
1973 |
1973 |
1974 |
1974 |
1975 |
1975 |
1976 |
1976 |
1977 |
1977 |
1978 |
1978 |
1979 |
1979 |
1980 |
1980 |
1981 |
1981 |
1982 |
1982 |
1983 |
1983 |
1984 |
1984 |
1985 |
1985 |
1986 |
1986 |
1987 |
1987 |
1988 |
1988 |
1989 |
1989 |
1990 |
1990 |
1991 |
1991 |
1992 |
1992 |
1993 |
1993 |
1994 |
1994 |
1995 |
1995 |
1996 |
1996 |
1997 |
1997 |
1998 |
1998 |
1999 |
1999 |
2000 |
2000 |
9998 |
Unknown |
9999 |
NIU (not in universe) |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.