Year Years 1950 85.15175 1955 84.69656 1960 83.60819 1965 81.7738 1970 81.09958 1975 79.28384 1980 77.8876 1985 77.3029 1990 82.44962 1995 88.51357 2000 85.37754 2005 81.36683 2010 76.99372 2015 74.96225 2020 75.34192 2025 77.93783 2030 81.51271 2035 84.69753 2040 87.11748 2045 88.6561 2050 89.62233 2055 90.10376 2060 90.49487 2065 90.69769 2070 90.84033 2075 91.01787 2080 91.22422 2085 91.41139 2090 91.57666 2095 91.72294 2100 91.8616