Year Years 1950 34.709 1951 34.863 1952 35.182 1953 35.524 1954 35.888 1955 36.274 1956 36.681 1957 37.106 1958 37.547 1959 37.995 1960 38.445 1961 38.887 1962 39.315 1963 39.724 1964 40.112 1965 40.483 1966 40.843 1967 41.201 1968 41.566 1969 41.943 1970 42.335 1971 42.747 1972 43.174 1973 43.613 1974 44.058 1975 44.507 1976 44.961 1977 45.412 1978 45.849 1979 46.261 1980 46.627 1981 46.927 1982 47.154 1983 47.306 1984 47.386 1985 47.404 1986 47.378 1987 47.328 1988 47.274 1989 47.228 1990 47.191 1991 47.16 1992 47.127 1993 47.088 1994 47.049 1995 47.014 1996 46.988 1997 46.98 1998 47.002 1999 47.065 2000 47.191 2001 47.399 2002 47.693 2003 48.069 2004 48.518 2005 49.021 2006 49.555 2007 50.091 2008 50.61 2009 51.101 2010 51.561 2011 51.997 2012 52.426 2013 52.86 2014 53.304 2015 53.758 2016 54.222 2017 54.69 2018 55.158 2019 55.626 2020 56.093 2021 56.558 2022 57.021 2023 57.484 2024 57.944 2025 58.402 2026 58.856 2027 59.307 2028 59.754 2029 60.196 2030 60.633 2031 61.066 2032 61.494 2033 61.918 2034 62.337 2035 62.75 2036 63.157 2037 63.557 2038 63.949 2039 64.334 2040 64.711 2041 65.079 2042 65.438 2043 65.789 2044 66.132 2045 66.468 2046 66.797 2047 67.119 2048 67.435 2049 67.745 2050 68.049 2051 68.349 2052 68.642 2053 68.93 2054 69.212 2055 69.487 2056 69.754 2057 70.014 2058 70.265 2059 70.509 2060 70.747 2061 70.979 2062 71.207 2063 71.431 2064 71.653 2065 71.871 2066 72.086 2067 72.297 2068 72.502 2069 72.703 2070 72.899 2071 73.091 2072 73.28 2073 73.466 2074 73.649 2075 73.832 2076 74.013 2077 74.194 2078 74.374 2079 74.553 2080 74.732 2081 74.909 2082 75.085 2083 75.258 2084 75.429 2085 75.597 2086 75.76 2087 75.92 2088 76.075 2089 76.228 2090 76.377 2091 76.525 2092 76.671 2093 76.817 2094 76.963 2095 77.11 2096 77.257 2097 77.405 2098 77.554 2099 77.704