Year Years 1950 69.241 1951 69.38 1952 69.638 1953 69.859 1954 70.041 1955 70.186 1956 70.294 1957 70.367 1958 70.41 1959 70.427 1960 70.428 1961 70.419 1962 70.411 1963 70.411 1964 70.425 1965 70.454 1966 70.499 1967 70.552 1968 70.61 1969 70.671 1970 70.736 1971 70.806 1972 70.881 1973 70.961 1974 71.042 1975 71.122 1976 71.194 1977 71.256 1978 71.308 1979 71.349 1980 71.384 1981 71.416 1982 71.45 1983 71.494 1984 71.549 1985 71.618 1986 71.7 1987 71.795 1988 71.9 1989 72.018 1990 72.149 1991 72.296 1992 72.46 1993 72.641 1994 72.839 1995 73.053 1996 73.284 1997 73.528 1998 73.782 1999 74.045 2000 74.313 2001 74.582 2002 74.85 2003 75.119 2004 75.387 2005 75.663 2006 75.953 2007 76.262 2008 76.589 2009 76.928 2010 77.269 2011 77.598 2012 77.902 2013 78.173 2014 78.41 2015 78.614 2016 78.794 2017 78.963 2018 79.13 2019 79.301 2020 79.48 2021 79.665 2022 79.854 2023 80.044 2024 80.234 2025 80.424 2026 80.615 2027 80.805 2028 80.996 2029 81.186 2030 81.377 2031 81.568 2032 81.759 2033 81.95 2034 82.139 2035 82.327 2036 82.511 2037 82.691 2038 82.866 2039 83.036 2040 83.2 2041 83.357 2042 83.509 2043 83.656 2044 83.798 2045 83.936 2046 84.069 2047 84.199 2048 84.324 2049 84.447 2050 84.568 2051 84.687 2052 84.804 2053 84.921 2054 85.037 2055 85.153 2056 85.268 2057 85.384 2058 85.499 2059 85.613 2060 85.727 2061 85.841 2062 85.953 2063 86.065 2064 86.176 2065 86.287 2066 86.397 2067 86.507 2068 86.617 2069 86.727 2070 86.837 2071 86.946 2072 87.054 2073 87.162 2074 87.269 2075 87.375 2076 87.482 2077 87.588 2078 87.696 2079 87.805 2080 87.914 2081 88.024 2082 88.134 2083 88.243 2084 88.352 2085 88.46 2086 88.568 2087 88.677 2088 88.786 2089 88.896 2090 89.006 2091 89.116 2092 89.225 2093 89.334 2094 89.441 2095 89.548 2096 89.654 2097 89.759 2098 89.863 2099 89.965