Year Years 1950 90.83292 1955 87.185 1960 80.95035 1965 76.22152 1970 76.91713 1975 75.96901 1980 80.00555 1985 82.82873 1990 90.83219 1995 93.78908 2000 91.60386 2005 94.23933 2010 96.25075 2015 98.2691 2020 99.50907 2025 99.69122 2030 99.78859 2035 100.03228 2040 100.06687 2045 100.02639 2050 100.01566 2055 100.09612 2060 100.28059 2065 100.52218 2070 100.80003 2075 101.09426 2080 101.36709 2085 101.60862 2090 101.8171 2095 101.98903 2100 102.13831