Year Years 1950 41.706 1951 41.941 1952 42.41 1953 42.875 1954 43.337 1955 43.796 1956 44.252 1957 44.706 1958 45.161 1959 45.618 1960 46.08 1961 46.552 1962 47.037 1963 47.536 1964 48.05 1965 48.583 1966 49.135 1967 49.702 1968 50.277 1969 50.852 1970 51.414 1971 51.951 1972 52.454 1973 52.919 1974 53.346 1975 53.735 1976 54.095 1977 54.435 1978 54.77 1979 55.107 1980 55.452 1981 55.812 1982 56.186 1983 56.573 1984 56.973 1985 57.385 1986 57.802 1987 58.222 1988 58.642 1989 59.064 1990 59.495 1991 59.945 1992 60.419 1993 60.919 1994 61.444 1995 61.987 1996 62.541 1997 63.096 1998 63.64 1999 64.162 2000 64.652 2001 65.1 2002 65.506 2003 65.875 2004 66.211 2005 66.528 2006 66.843 2007 67.169 2008 67.513 2009 67.877 2010 68.255 2011 68.633 2012 68.997 2013 69.335 2014 69.643 2015 69.922 2016 70.177 2017 70.418 2018 70.654 2019 70.89 2020 71.127 2021 71.365 2022 71.604 2023 71.841 2024 72.077 2025 72.311 2026 72.544 2027 72.776 2028 73.006 2029 73.234 2030 73.461 2031 73.686 2032 73.909 2033 74.132 2034 74.353 2035 74.573 2036 74.793 2037 75.011 2038 75.229 2039 75.447 2040 75.665 2041 75.883 2042 76.102 2043 76.32 2044 76.54 2045 76.759 2046 76.979 2047 77.2 2048 77.42 2049 77.641 2050 77.861 2051 78.081 2052 78.301 2053 78.521 2054 78.74 2055 78.958 2056 79.177 2057 79.394 2058 79.611 2059 79.826 2060 80.04 2061 80.251 2062 80.46 2063 80.665 2064 80.866 2065 81.063 2066 81.254 2067 81.44 2068 81.62 2069 81.794 2070 81.963 2071 82.127 2072 82.286 2073 82.441 2074 82.593 2075 82.742 2076 82.889 2077 83.032 2078 83.174 2079 83.313 2080 83.45 2081 83.584 2082 83.716 2083 83.845 2084 83.972 2085 84.096 2086 84.22 2087 84.342 2088 84.463 2089 84.584 2090 84.704 2091 84.823 2092 84.942 2093 85.059 2094 85.175 2095 85.29 2096 85.404 2097 85.516 2098 85.626 2099 85.736