{"year":1936,"incidence":0.9}
{"year":1937,"incidence":0.8}
{"year":1938,"incidence":0.8}
{"year":1939,"incidence":1.3}
{"year":1940,"incidence":1.4}
{"year":1941,"incidence":1.2}
{"year":1942,"incidence":1.7}
{"year":1943,"incidence":1.8}
{"year":1944,"incidence":1.6}
{"year":1945,"incidence":1.5}
{"year":1946,"incidence":1.5}
{"year":1947,"incidence":2}
{"year":1948,"incidence":2.5}
{"year":1949,"incidence":2.7}
{"year":1950,"incidence":2.9}
{"year":1951,"incidence":2.5}
{"year":1952,"incidence":3.1}
{"year":1953,"incidence":2.4}
{"year":1954,"incidence":2.2}
{"year":1955,"incidence":2.9}
{"year":1956,"incidence":2.5}
{"year":1957,"incidence":2.6}
{"year":1958,"incidence":3.2}
{"year":1959,"incidence":3.8}
{"year":1960,"incidence":4.2}
{"year":1961,"incidence":3.9}
{"year":1962,"incidence":3.7}
{"year":1963,"incidence":3.3}
{"year":1964,"incidence":3.7}
{"year":1965,"incidence":3.9}
{"year":1966,"incidence":4.1}
{"year":1967,"incidence":3.8}
{"year":1968,"incidence":4.7}
{"year":1969,"incidence":4.4}
{"year":1970,"incidence":4.8}
{"year":1971,"incidence":4.8}
{"year":1972,"incidence":4.8}