Year Years 1950 50.412 1951 50.952 1952 52.014 1953 53.04 1954 54.03 1955 54.985 1956 55.904 1957 56.787 1958 57.634 1959 58.442 1960 59.211 1961 59.94 1962 60.629 1963 61.277 1964 61.887 1965 62.46 1966 62.997 1967 63.502 1968 63.979 1969 64.431 1970 64.861 1971 65.271 1972 65.66 1973 66.034 1974 66.394 1975 66.749 1976 67.101 1977 67.454 1978 67.809 1979 68.165 1980 68.522 1981 68.878 1982 69.227 1983 69.565 1984 69.887 1985 70.189 1986 70.467 1987 70.719 1988 70.948 1989 71.151 1990 71.331 1991 71.49 1992 71.631 1993 71.759 1994 71.877 1995 71.986 1996 72.087 1997 72.182 1998 72.269 1999 72.352 2000 72.432 2001 72.51 2002 72.586 2003 72.66 2004 72.735 2005 72.811 2006 72.89 2007 72.971 2008 73.054 2009 73.139 2010 73.227 2011 73.318 2012 73.411 2013 73.506 2014 73.603 2015 73.7 2016 73.799 2017 73.899 2018 73.999 2019 74.101 2020 74.203 2021 74.305 2022 74.408 2023 74.511 2024 74.614 2025 74.718 2026 74.822 2027 74.926 2028 75.031 2029 75.135 2030 75.241 2031 75.348 2032 75.456 2033 75.565 2034 75.677 2035 75.79 2036 75.904 2037 76.021 2038 76.139 2039 76.258 2040 76.377 2041 76.497 2042 76.617 2043 76.737 2044 76.857 2045 76.978 2046 77.098 2047 77.22 2048 77.342 2049 77.466 2050 77.591 2051 77.718 2052 77.846 2053 77.974 2054 78.104 2055 78.233 2056 78.363 2057 78.492 2058 78.622 2059 78.751 2060 78.881 2061 79.012 2062 79.145 2063 79.28 2064 79.417 2065 79.555 2066 79.696 2067 79.837 2068 79.979 2069 80.121 2070 80.263 2071 80.406 2072 80.549 2073 80.693 2074 80.837 2075 80.981 2076 81.125 2077 81.267 2078 81.407 2079 81.547 2080 81.686 2081 81.825 2082 81.964 2083 82.105 2084 82.246 2085 82.387 2086 82.529 2087 82.669 2088 82.807 2089 82.943 2090 83.076 2091 83.208 2092 83.338 2093 83.466 2094 83.593 2095 83.719 2096 83.845 2097 83.969 2098 84.092 2099 84.215