Year Years 1950 53.01 1951 53.125 1952 53.379 1953 53.684 1954 54.041 1955 54.448 1956 54.903 1957 55.401 1958 55.936 1959 56.494 1960 57.059 1961 57.617 1962 58.151 1963 58.652 1964 59.12 1965 59.56 1966 59.987 1967 60.422 1968 60.88 1969 61.368 1970 61.888 1971 62.441 1972 63.015 1973 63.6 1974 64.19 1975 64.776 1976 65.345 1977 65.895 1978 66.43 1979 66.955 1980 67.494 1981 68.078 1982 68.722 1983 69.424 1984 70.169 1985 70.92 1986 71.63 1987 72.257 1988 72.772 1989 73.164 1990 73.439 1991 73.616 1992 73.735 1993 73.831 1994 73.923 1995 74.018 1996 74.118 1997 74.214 1998 74.305 1999 74.4 2000 74.513 2001 74.657 2002 74.84 2003 75.067 2004 75.339 2005 75.654 2006 76.01 2007 76.393 2008 76.788 2009 77.182 2010 77.561 2011 77.91 2012 78.226 2013 78.505 2014 78.747 2015 78.953 2016 79.133 2017 79.298 2018 79.459 2019 79.621 2020 79.786 2021 79.956 2022 80.126 2023 80.294 2024 80.459 2025 80.622 2026 80.784 2027 80.944 2028 81.102 2029 81.26 2030 81.416 2031 81.571 2032 81.724 2033 81.875 2034 82.024 2035 82.171 2036 82.317 2037 82.46 2038 82.603 2039 82.744 2040 82.884 2041 83.024 2042 83.162 2043 83.3 2044 83.437 2045 83.573 2046 83.709 2047 83.844 2048 83.978 2049 84.112 2050 84.244 2051 84.375 2052 84.505 2053 84.634 2054 84.762 2055 84.888 2056 85.014 2057 85.139 2058 85.264 2059 85.388 2060 85.512 2061 85.636 2062 85.758 2063 85.879 2064 86 2065 86.12 2066 86.241 2067 86.362 2068 86.485 2069 86.608 2070 86.732 2071 86.855 2072 86.977 2073 87.097 2074 87.216 2075 87.333 2076 87.449 2077 87.564 2078 87.679 2079 87.795 2080 87.91 2081 88.026 2082 88.142 2083 88.259 2084 88.375 2085 88.491 2086 88.607 2087 88.723 2088 88.838 2089 88.953 2090 89.067 2091 89.181 2092 89.294 2093 89.406 2094 89.518 2095 89.628 2096 89.738 2097 89.847 2098 89.955 2099 90.062