Year Years 1950 61.553 1951 62.295 1952 63.722 1953 65.032 1954 66.227 1955 67.306 1956 68.27 1957 69.124 1958 69.873 1959 70.525 1960 71.091 1961 71.584 1962 72.019 1963 72.41 1964 72.765 1965 73.092 1966 73.394 1967 73.663 1968 73.895 1969 74.088 1970 74.237 1971 74.335 1972 74.381 1973 74.376 1974 74.33 1975 74.249 1976 74.143 1977 74.023 1978 73.905 1979 73.803 1980 73.739 1981 73.732 1982 73.784 1983 73.887 1984 74.028 1985 74.183 1986 74.317 1987 74.401 1988 74.418 1989 74.361 1990 74.232 1991 74.044 1992 73.827 1993 73.609 1994 73.407 1995 73.239 1996 73.119 1997 73.044 1998 73.013 1999 73.026 2000 73.071 2001 73.133 2002 73.199 2003 73.264 2004 73.334 2005 73.428 2006 73.575 2007 73.794 2008 74.091 2009 74.456 2010 74.868 2011 75.293 2012 75.697 2013 76.052 2014 76.348 2015 76.582 2016 76.764 2017 76.919 2018 77.067 2019 77.216 2020 77.37 2021 77.531 2022 77.693 2023 77.854 2024 78.012 2025 78.169 2026 78.323 2027 78.476 2028 78.625 2029 78.773 2030 78.918 2031 79.061 2032 79.202 2033 79.342 2034 79.48 2035 79.616 2036 79.751 2037 79.884 2038 80.016 2039 80.145 2040 80.274 2041 80.402 2042 80.528 2043 80.655 2044 80.781 2045 80.907 2046 81.033 2047 81.159 2048 81.284 2049 81.41 2050 81.534 2051 81.657 2052 81.778 2053 81.898 2054 82.016 2055 82.133 2056 82.249 2057 82.364 2058 82.48 2059 82.595 2060 82.711 2061 82.827 2062 82.942 2063 83.057 2064 83.172 2065 83.287 2066 83.4 2067 83.514 2068 83.627 2069 83.739 2070 83.852 2071 83.964 2072 84.075 2073 84.186 2074 84.297 2075 84.407 2076 84.517 2077 84.625 2078 84.733 2079 84.839 2080 84.946 2081 85.052 2082 85.158 2083 85.265 2084 85.372 2085 85.48 2086 85.588 2087 85.696 2088 85.803 2089 85.91 2090 86.017 2091 86.122 2092 86.228 2093 86.333 2094 86.437 2095 86.541 2096 86.645 2097 86.749 2098 86.852 2099 86.955