Year Years 1950 34.05 1951 34.161 1952 34.385 1953 34.611 1954 34.84 1955 35.073 1956 35.309 1957 35.551 1958 35.8 1959 36.061 1960 36.338 1961 36.635 1962 36.956 1963 37.302 1964 37.672 1965 38.061 1966 38.461 1967 38.864 1968 39.265 1969 39.66 1970 40.049 1971 40.436 1972 40.826 1973 41.221 1974 41.619 1975 42.018 1976 42.414 1977 42.801 1978 43.177 1979 43.539 1980 43.883 1981 44.209 1982 44.519 1983 44.816 1984 45.105 1985 45.388 1986 45.669 1987 45.952 1988 46.243 1989 46.548 1990 46.876 1991 47.234 1992 47.625 1993 48.044 1994 48.488 1995 48.952 1996 49.428 1997 49.904 1998 50.368 1999 50.809 2000 51.209 2001 51.554 2002 51.842 2003 52.079 2004 52.273 2005 52.438 2006 52.593 2007 52.76 2008 52.954 2009 53.186 2010 53.462 2011 53.78 2012 54.129 2013 54.496 2014 54.877 2015 55.266 2016 55.657 2017 56.048 2018 56.437 2019 56.819 2020 57.193 2021 57.558 2022 57.917 2023 58.271 2024 58.62 2025 58.963 2026 59.3 2027 59.631 2028 59.955 2029 60.273 2030 60.585 2031 60.89 2032 61.189 2033 61.482 2034 61.769 2035 62.05 2036 62.324 2037 62.591 2038 62.852 2039 63.106 2040 63.355 2041 63.599 2042 63.84 2043 64.077 2044 64.31 2045 64.539 2046 64.764 2047 64.984 2048 65.197 2049 65.405 2050 65.606 2051 65.802 2052 65.992 2053 66.177 2054 66.357 2055 66.533 2056 66.704 2057 66.87 2058 67.031 2059 67.188 2060 67.342 2061 67.492 2062 67.64 2063 67.785 2064 67.93 2065 68.074 2066 68.218 2067 68.363 2068 68.508 2069 68.652 2070 68.796 2071 68.938 2072 69.077 2073 69.212 2074 69.344 2075 69.474 2076 69.602 2077 69.73 2078 69.859 2079 69.99 2080 70.122 2081 70.256 2082 70.391 2083 70.527 2084 70.662 2085 70.798 2086 70.934 2087 71.07 2088 71.207 2089 71.343 2090 71.481 2091 71.62 2092 71.759 2093 71.901 2094 72.044 2095 72.189 2096 72.335 2097 72.483 2098 72.634 2099 72.786