NZ Polio Data

The table below shows the number of cases of polio in a given year in New Zealand:

Year 1915 1916 1917 1918 1919
Cases 10 1018 54 6 11
Year 1920 1921 1922 1923 1924
Cases 76 267 98 17 73
Year 1925 1926 1927 1928 1929
Cases 1159 22 29 47 55
Year 1930 1931 1932 1933 1934
Cases 12 25 150 45 14
Year 1935 1936 1937 1938 1939
Cases 8 87 816 22 50
Year 1940 1941 1942 1943 1944
Cases 23 4 31 179 45
Year 1945 1946 1947 1948 1949
Cases 16 113 135 964 355
Year 1950 1951 1952 1953 1954
Cases 72 27 890 403 43
Year 1955 1956 1957 1958 1959
Cases 703 897 63 57 16
Year 1960 1961 1962 1963 1964
Cases 4 214 5 0 0
Year 1965 1966 1967 1968 1969
Cases 0 0 0 0 0
Year 1970 1971 1972 1973 1974
Cases 2
 0
 0
 0
 0
Year 1975 1976 1977 1978
 1979
Cases 0
 0
 1
 0
 0
Year 1980 1981 1982 1983 1984
Cases 0
 0
 0
 0
 0
Year 1985 1986 1987 1988 1989
Cases 0
 0
 0
 0
 0
Year 1990 1991 1992 1993 1994
Cases 1
 0
 0
 0
 0
Year 1995 1996 1997 1998 1999
Cases 0
 0
 0
 1
 1

The following two graphs illustrate the data

Polio incidence in New Zealand, 1915–62.

Polio incidence in New Zealand, 1963–99