Year Years 1950 31.743 1951 31.943 1952 32.343 1953 32.74 1954 33.136 1955 33.529 1956 33.921 1957 34.312 1958 34.701 1959 35.091 1960 35.481 1961 35.874 1962 36.27 1963 36.669 1964 37.07 1965 37.473 1966 37.875 1967 38.274 1968 38.669 1969 39.059 1970 39.445 1971 39.828 1972 40.211 1973 40.594 1974 40.976 1975 41.358 1976 41.742 1977 42.126 1978 42.504 1979 42.873 1980 43.23 1981 43.577 1982 43.908 1983 44.213 1984 44.479 1985 44.664 1986 44.719 1987 44.634 1988 44.432 1989 44.157 1990 43.903 1991 43.786 1992 43.885 1993 44.242 1994 44.85 1995 45.655 1996 46.562 1997 47.454 1998 48.237 1999 48.872 2000 49.349 2001 49.695 2002 49.976 2003 50.248 2004 50.529 2005 50.829 2006 51.148 2007 51.472 2008 51.793 2009 52.114 2010 52.439 2011 52.775 2012 53.126 2013 53.492 2014 53.873 2015 54.267 2016 54.669 2017 55.073 2018 55.473 2019 55.865 2020 56.247 2021 56.62 2022 56.984 2023 57.343 2024 57.694 2025 58.04 2026 58.379 2027 58.713 2028 59.04 2029 59.362 2030 59.677 2031 59.985 2032 60.286 2033 60.579 2034 60.865 2035 61.143 2036 61.414 2037 61.677 2038 61.935 2039 62.186 2040 62.431 2041 62.669 2042 62.9 2043 63.125 2044 63.343 2045 63.556 2046 63.764 2047 63.967 2048 64.167 2049 64.363 2050 64.554 2051 64.74 2052 64.921 2053 65.096 2054 65.265 2055 65.429 2056 65.59 2057 65.749 2058 65.906 2059 66.061 2060 66.215 2061 66.366 2062 66.515 2063 66.661 2064 66.803 2065 66.943 2066 67.081 2067 67.219 2068 67.355 2069 67.491 2070 67.625 2071 67.756 2072 67.883 2073 68.004 2074 68.122 2075 68.236 2076 68.348 2077 68.459 2078 68.571 2079 68.685 2080 68.801 2081 68.92 2082 69.041 2083 69.164 2084 69.288 2085 69.412 2086 69.534 2087 69.654 2088 69.77 2089 69.885 2090 69.998 2091 70.111 2092 70.226 2093 70.342 2094 70.462 2095 70.586 2096 70.715 2097 70.848 2098 70.985 2099 71.128