Year Years 1950 96.99836 1955 97.76055 1960 98.27365 1965 99.00181 1970 98.86855 1975 98.88633 1980 98.89963 1985 98.42866 1990 97.82867 1995 97.47211 2000 97.55014 2005 98.30905 2010 98.77713 2015 98.98781 2020 98.76524 2025 98.62523 2030 98.69708 2035 98.90074 2040 99.17042 2045 99.46649 2050 99.7619 2055 100.03195 2060 100.25289 2065 100.45115 2070 100.66384 2075 100.88589 2080 101.0916 2085 101.27579 2090 101.43424 2095 101.56669 2100 101.6835