Year Years 1950 53.568 1951 53.865 1952 54.45 1953 55.017 1954 55.566 1955 56.098 1956 56.614 1957 57.115 1958 57.603 1959 58.084 1960 58.56 1961 59.039 1962 59.523 1963 60.013 1964 60.508 1965 61.002 1966 61.484 1967 61.948 1968 62.386 1969 62.797 1970 63.181 1971 63.542 1972 63.887 1973 64.222 1974 64.55 1975 64.873 1976 65.191 1977 65.503 1978 65.807 1979 66.103 1980 66.392 1981 66.675 1982 66.951 1983 67.221 1984 67.485 1985 67.743 1986 67.996 1987 68.243 1988 68.484 1989 68.72 1990 68.95 1991 69.177 1992 69.4 1993 69.618 1994 69.832 1995 70.04 1996 70.241 1997 70.433 1998 70.617 1999 70.792 2000 70.96 2001 71.121 2002 71.279 2003 71.434 2004 71.589 2005 71.744 2006 71.899 2007 72.054 2008 72.21 2009 72.365 2010 72.521 2011 72.676 2012 72.831 2013 72.986 2014 73.14 2015 73.294 2016 73.448 2017 73.603 2018 73.758 2019 73.915 2020 74.072 2021 74.23 2022 74.39 2023 74.55 2024 74.711 2025 74.873 2026 75.035 2027 75.198 2028 75.361 2029 75.524 2030 75.688 2031 75.852 2032 76.016 2033 76.181 2034 76.345 2035 76.511 2036 76.678 2037 76.846 2038 77.016 2039 77.188 2040 77.361 2041 77.536 2042 77.711 2043 77.887 2044 78.063 2045 78.239 2046 78.415 2047 78.591 2048 78.767 2049 78.942 2050 79.118 2051 79.295 2052 79.471 2053 79.649 2054 79.827 2055 80.007 2056 80.188 2057 80.371 2058 80.554 2059 80.738 2060 80.922 2061 81.106 2062 81.289 2063 81.47 2064 81.648 2065 81.824 2066 81.997 2067 82.168 2068 82.335 2069 82.5 2070 82.662 2071 82.82 2072 82.976 2073 83.128 2074 83.276 2075 83.422 2076 83.565 2077 83.704 2078 83.841 2079 83.976 2080 84.107 2081 84.234 2082 84.358 2083 84.479 2084 84.596 2085 84.711 2086 84.825 2087 84.938 2088 85.051 2089 85.164 2090 85.278 2091 85.391 2092 85.504 2093 85.615 2094 85.726 2095 85.835 2096 85.943 2097 86.049 2098 86.153 2099 86.256