Year Years 1950 71.15 1951 71.368 1952 71.784 1953 72.158 1954 72.491 1955 72.783 1956 73.036 1957 73.25 1958 73.432 1959 73.586 1960 73.721 1961 73.846 1962 73.97 1963 74.099 1964 74.238 1965 74.384 1966 74.532 1967 74.674 1968 74.805 1969 74.925 1970 75.037 1971 75.144 1972 75.252 1973 75.366 1974 75.491 1975 75.63 1976 75.788 1977 75.964 1978 76.155 1979 76.358 1980 76.567 1981 76.776 1982 76.98 1983 77.174 1984 77.358 1985 77.533 1986 77.705 1987 77.878 1988 78.057 1989 78.241 1990 78.428 1991 78.611 1992 78.787 1993 78.953 1994 79.109 1995 79.26 1996 79.411 1997 79.568 1998 79.735 1999 79.914 2000 80.107 2001 80.312 2002 80.526 2003 80.744 2004 80.966 2005 81.19 2006 81.417 2007 81.647 2008 81.878 2009 82.105 2010 82.325 2011 82.531 2012 82.722 2013 82.894 2014 83.049 2015 83.189 2016 83.317 2017 83.438 2018 83.558 2019 83.679 2020 83.803 2021 83.929 2022 84.056 2023 84.183 2024 84.31 2025 84.436 2026 84.562 2027 84.688 2028 84.814 2029 84.941 2030 85.067 2031 85.192 2032 85.317 2033 85.441 2034 85.565 2035 85.687 2036 85.809 2037 85.93 2038 86.051 2039 86.171 2040 86.291 2041 86.411 2042 86.531 2043 86.65 2044 86.77 2045 86.89 2046 87.01 2047 87.131 2048 87.252 2049 87.372 2050 87.492 2051 87.611 2052 87.729 2053 87.846 2054 87.961 2055 88.076 2056 88.19 2057 88.305 2058 88.421 2059 88.538 2060 88.655 2061 88.772 2062 88.889 2063 89.006 2064 89.121 2065 89.236 2066 89.35 2067 89.464 2068 89.579 2069 89.694 2070 89.81 2071 89.926 2072 90.041 2073 90.156 2074 90.271 2075 90.385 2076 90.499 2077 90.614 2078 90.729 2079 90.844 2080 90.96 2081 91.076 2082 91.191 2083 91.307 2084 91.421 2085 91.536 2086 91.649 2087 91.763 2088 91.876 2089 91.99 2090 92.103 2091 92.218 2092 92.332 2093 92.448 2094 92.564 2095 92.682 2096 92.8 2097 92.919 2098 93.039 2099 93.16