12.Chiba.ken, Life expectancy at birth (period, 1x10) Last modified:2023-12-05, ver.004_004 JMD(IPSS) Year Female Male Total 1947-1949 58.31 53.13 55.71 1950-1959 65.34 61.16 63.25 1960-1969 72.84 67.43 70.11 1970-1979 76.91 71.71 74.31 1980-1989 80.63 75.14 77.93 1990-1999 82.98 76.94 80.00 2000-2009 85.36 78.85 82.13 2010-2019 86.73 80.66 83.69 2020-2022 87.31 81.29 84.26