Year Years 1950 98.97009 1955 98.21345 1960 97.73501 1965 97.44603 1970 97.65017 1975 97.96047 1980 98.24459 1985 98.09899 1990 97.87516 1995 97.49256 2000 97.5059 2005 97.6906 2010 98.1825 2015 98.98653 2020 99.57755 2025 99.98787 2030 100.05226 2035 100.09313 2040 100.13203 2045 100.17167 2050 100.21288 2055 100.28344 2060 100.39238 2065 100.5245 2070 100.66206 2075 100.81605 2080 100.99214 2085 101.18156 2090 101.36373 2095 101.54295 2100 101.72433