Year Years 1950 56.402 1951 56.559 1952 56.898 1953 57.287 1954 57.726 1955 58.215 1956 58.747 1957 59.317 1958 59.912 1959 60.508 1960 61.081 1961 61.604 1962 62.048 1963 62.397 1964 62.647 1965 62.802 1966 62.877 1967 62.905 1968 62.918 1969 62.935 1970 62.976 1971 63.056 1972 63.175 1973 63.325 1974 63.505 1975 63.701 1976 63.897 1977 64.076 1978 64.226 1979 64.343 1980 64.43 1981 64.495 1982 64.552 1983 64.614 1984 64.683 1985 64.764 1986 64.859 1987 64.96 1988 65.062 1989 65.159 1990 65.239 1991 65.294 1992 65.317 1993 65.309 1994 65.272 1995 65.214 1996 65.144 1997 65.077 1998 65.024 1999 64.994 2000 64.994 2001 65.027 2002 65.088 2003 65.175 2004 65.285 2005 65.42 2006 65.581 2007 65.763 2008 65.961 2009 66.168 2010 66.374 2011 66.57 2012 66.749 2013 66.909 2014 67.046 2015 67.163 2016 67.264 2017 67.356 2018 67.447 2019 67.539 2020 67.636 2021 67.736 2022 67.838 2023 67.94 2024 68.043 2025 68.146 2026 68.251 2027 68.357 2028 68.464 2029 68.574 2030 68.684 2031 68.797 2032 68.911 2033 69.026 2034 69.143 2035 69.26 2036 69.379 2037 69.498 2038 69.619 2039 69.741 2040 69.865 2041 69.99 2042 70.117 2043 70.245 2044 70.375 2045 70.507 2046 70.639 2047 70.772 2048 70.905 2049 71.037 2050 71.17 2051 71.301 2052 71.433 2053 71.564 2054 71.695 2055 71.827 2056 71.959 2057 72.093 2058 72.228 2059 72.364 2060 72.503 2061 72.645 2062 72.789 2063 72.935 2064 73.083 2065 73.232 2066 73.382 2067 73.53 2068 73.678 2069 73.825 2070 73.972 2071 74.119 2072 74.268 2073 74.42 2074 74.574 2075 74.73 2076 74.888 2077 75.047 2078 75.206 2079 75.365 2080 75.523 2081 75.682 2082 75.84 2083 76 2084 76.16 2085 76.321 2086 76.484 2087 76.648 2088 76.814 2089 76.98 2090 77.148 2091 77.316 2092 77.484 2093 77.653 2094 77.822 2095 77.99 2096 78.158 2097 78.326 2098 78.494 2099 78.661