Year Years 1950 46.346 1951 46.6 1952 47.121 1953 47.664 1954 48.231 1955 48.821 1956 49.431 1957 50.057 1958 50.695 1959 51.331 1960 51.955 1961 52.552 1962 53.109 1963 53.618 1964 54.079 1965 54.494 1966 54.873 1967 55.233 1968 55.59 1969 55.954 1970 56.335 1971 56.74 1972 57.166 1973 57.612 1974 58.08 1975 58.567 1976 59.072 1977 59.589 1978 60.113 1979 60.643 1980 61.18 1981 61.726 1982 62.283 1983 62.849 1984 63.42 1985 63.989 1986 64.55 1987 65.096 1988 65.622 1989 66.122 1990 66.59 1991 67.024 1992 67.427 1993 67.802 1994 68.151 1995 68.48 1996 68.794 1997 69.097 1998 69.394 1999 69.685 2000 69.971 2001 70.248 2002 70.512 2003 70.76 2004 70.995 2005 71.217 2006 71.43 2007 71.639 2008 71.846 2009 72.056 2010 72.269 2011 72.489 2012 72.712 2013 72.939 2014 73.169 2015 73.402 2016 73.636 2017 73.869 2018 74.102 2019 74.332 2020 74.56 2021 74.786 2022 75.009 2023 75.232 2024 75.453 2025 75.673 2026 75.893 2027 76.112 2028 76.33 2029 76.549 2030 76.767 2031 76.984 2032 77.201 2033 77.417 2034 77.633 2035 77.849 2036 78.066 2037 78.284 2038 78.503 2039 78.722 2040 78.942 2041 79.161 2042 79.379 2043 79.596 2044 79.811 2045 80.025 2046 80.238 2047 80.451 2048 80.663 2049 80.874 2050 81.083 2051 81.289 2052 81.49 2053 81.686 2054 81.876 2055 82.06 2056 82.238 2057 82.41 2058 82.577 2059 82.739 2060 82.897 2061 83.05 2062 83.2 2063 83.346 2064 83.488 2065 83.627 2066 83.763 2067 83.896 2068 84.027 2069 84.155 2070 84.282 2071 84.407 2072 84.532 2073 84.655 2074 84.779 2075 84.901 2076 85.021 2077 85.139 2078 85.256 2079 85.37 2080 85.483 2081 85.595 2082 85.707 2083 85.819 2084 85.932 2085 86.045 2086 86.159 2087 86.272 2088 86.386 2089 86.498 2090 86.611 2091 86.723 2092 86.835 2093 86.946 2094 87.058 2095 87.17 2096 87.282 2097 87.394 2098 87.506 2099 87.618