Year Years 1950 60.626 1951 60.622 1952 60.631 1953 60.676 1954 60.756 1955 60.872 1956 61.021 1957 61.201 1958 61.408 1959 61.631 1960 61.862 1961 62.089 1962 62.303 1963 62.493 1964 62.659 1965 62.8 1966 62.925 1967 63.045 1968 63.167 1969 63.295 1970 63.429 1971 63.567 1972 63.704 1973 63.836 1974 63.962 1975 64.083 1976 64.198 1977 64.31 1978 64.42 1979 64.529 1980 64.635 1981 64.737 1982 64.835 1983 64.93 1984 65.024 1985 65.123 1986 65.231 1987 65.354 1988 65.493 1989 65.649 1990 65.817 1991 65.993 1992 66.169 1993 66.345 1994 66.521 1995 66.704 1996 66.905 1997 67.129 1998 67.38 1999 67.654 2000 67.942 2001 68.234 2002 68.515 2003 68.778 2004 69.018 2005 69.238 2006 69.445 2007 69.646 2008 69.848 2009 70.05 2010 70.248 2011 70.432 2012 70.595 2013 70.734 2014 70.849 2015 70.942 2016 71.02 2017 71.091 2018 71.162 2019 71.238 2020 71.32 2021 71.409 2022 71.502 2023 71.596 2024 71.692 2025 71.789 2026 71.888 2027 71.988 2028 72.089 2029 72.191 2030 72.294 2031 72.4 2032 72.506 2033 72.615 2034 72.725 2035 72.836 2036 72.948 2037 73.06 2038 73.173 2039 73.286 2040 73.399 2041 73.515 2042 73.632 2043 73.752 2044 73.875 2045 73.999 2046 74.125 2047 74.252 2048 74.379 2049 74.506 2050 74.634 2051 74.764 2052 74.895 2053 75.029 2054 75.166 2055 75.305 2056 75.445 2057 75.587 2058 75.729 2059 75.871 2060 76.013 2061 76.155 2062 76.297 2063 76.439 2064 76.582 2065 76.725 2066 76.87 2067 77.017 2068 77.165 2069 77.316 2070 77.469 2071 77.623 2072 77.78 2073 77.937 2074 78.096 2075 78.256 2076 78.416 2077 78.578 2078 78.74 2079 78.903 2080 79.067 2081 79.232 2082 79.398 2083 79.565 2084 79.733 2085 79.901 2086 80.068 2087 80.234 2088 80.4 2089 80.564 2090 80.726 2091 80.889 2092 81.051 2093 81.212 2094 81.375 2095 81.538 2096 81.702 2097 81.867 2098 82.032 2099 82.199