{"year":1920,"men":53.6,"women":54.6}
{"year":1930,"men":58.1,"women":61.6}
{"year":1940,"men":60.8,"women":65.2}
{"year":1950,"men":65.6,"women":71.1}
{"year":1960,"men":66.6,"women":73.1}
{"year":1970,"men":67.1,"women":74.7}
{"year":1980,"men":70,"women":77.5}
{"year":1990,"men":71.8,"women":78.8}