Year Years 1950 92.7891 1955 93.35794 1960 93.82815 1965 94.57411 1970 95.17633 1975 95.67161 1980 96.08419 1985 96.04711 1990 95.9676 1995 95.82528 2000 95.58884 2005 95.44933 2010 95.26465 2015 95.15869 2020 95.19598 2025 95.37307 2030 95.78451 2035 96.14726 2040 96.46591 2045 96.74567 2050 96.96809 2055 97.14727 2060 97.29038 2065 97.34598 2070 97.42733 2075 97.54582 2080 97.70873 2085 97.91316 2090 98.15543 2095 98.43572 2100 98.74291