Year Years 1950 32.442 1951 32.588 1952 32.882 1953 33.177 1954 33.472 1955 33.768 1956 34.065 1957 34.362 1958 34.659 1959 34.957 1960 35.255 1961 35.552 1962 35.849 1963 36.145 1964 36.441 1965 36.737 1966 37.034 1967 37.334 1968 37.635 1969 37.939 1970 38.237 1971 38.522 1972 38.792 1973 39.054 1974 39.321 1975 39.619 1976 39.982 1977 40.427 1978 40.958 1979 41.562 1980 42.212 1981 42.865 1982 43.481 1983 44.03 1984 44.504 1985 44.905 1986 45.252 1987 45.579 1988 45.915 1989 46.273 1990 46.666 1991 47.097 1992 47.557 1993 48.038 1994 48.533 1995 49.035 1996 49.538 1997 50.032 1998 50.509 1999 50.965 2000 51.39 2001 51.78 2002 52.139 2003 52.472 2004 52.783 2005 53.082 2006 53.379 2007 53.682 2008 53.997 2009 54.324 2010 54.657 2011 54.987 2012 55.302 2013 55.598 2014 55.877 2015 56.144 2016 56.409 2017 56.684 2018 56.979 2019 57.299 2020 57.648 2021 58.028 2022 58.432 2023 58.855 2024 59.292 2025 59.74 2026 60.195 2027 60.652 2028 61.107 2029 61.556 2030 61.995 2031 62.421 2032 62.835 2033 63.238 2034 63.628 2035 64.005 2036 64.37 2037 64.724 2038 65.069 2039 65.406 2040 65.737 2041 66.062 2042 66.381 2043 66.696 2044 67.006 2045 67.311 2046 67.613 2047 67.911 2048 68.203 2049 68.49 2050 68.769 2051 69.04 2052 69.301 2053 69.553 2054 69.796 2055 70.03 2056 70.256 2057 70.476 2058 70.691 2059 70.904 2060 71.115 2061 71.327 2062 71.539 2063 71.752 2064 71.967 2065 72.183 2066 72.402 2067 72.622 2068 72.842 2069 73.062 2070 73.282 2071 73.5 2072 73.716 2073 73.93 2074 74.14 2075 74.344 2076 74.542 2077 74.733 2078 74.917 2079 75.094 2080 75.266 2081 75.432 2082 75.595 2083 75.757 2084 75.918 2085 76.079 2086 76.24 2087 76.401 2088 76.561 2089 76.722 2090 76.882 2091 77.041 2092 77.201 2093 77.36 2094 77.518 2095 77.677 2096 77.835 2097 77.992 2098 78.149 2099 78.305