Year Years 1950 55.18 1951 55.338 1952 55.727 1953 56.258 1954 56.934 1955 57.749 1956 58.696 1957 59.756 1958 60.903 1959 62.086 1960 63.247 1961 64.325 1962 65.261 1963 66.017 1964 66.585 1965 66.987 1966 67.273 1967 67.517 1968 67.779 1969 68.084 1970 68.441 1971 68.84 1972 69.247 1973 69.64 1974 70.014 1975 70.37 1976 70.711 1977 71.045 1978 71.382 1979 71.725 1980 72.085 1981 72.472 1982 72.885 1983 73.315 1984 73.746 1985 74.15 1986 74.488 1987 74.741 1988 74.902 1989 74.978 1990 74.992 1991 74.981 1992 74.985 1993 75.039 1994 75.158 1995 75.352 1996 75.618 1997 75.931 1998 76.269 1999 76.616 2000 76.953 2001 77.264 2002 77.541 2003 77.782 2004 77.988 2005 78.17 2006 78.344 2007 78.528 2008 78.733 2009 78.962 2010 79.209 2011 79.462 2012 79.705 2013 79.927 2014 80.124 2015 80.297 2016 80.451 2017 80.595 2018 80.737 2019 80.88 2020 81.026 2021 81.176 2022 81.325 2023 81.472 2024 81.617 2025 81.76 2026 81.902 2027 82.042 2028 82.181 2029 82.319 2030 82.458 2031 82.595 2032 82.733 2033 82.87 2034 83.006 2035 83.142 2036 83.278 2037 83.413 2038 83.547 2039 83.681 2040 83.813 2041 83.945 2042 84.075 2043 84.205 2044 84.334 2045 84.462 2046 84.59 2047 84.717 2048 84.844 2049 84.971 2050 85.097 2051 85.223 2052 85.348 2053 85.473 2054 85.598 2055 85.722 2056 85.846 2057 85.968 2058 86.09 2059 86.211 2060 86.332 2061 86.452 2062 86.571 2063 86.691 2064 86.811 2065 86.931 2066 87.05 2067 87.169 2068 87.288 2069 87.406 2070 87.524 2071 87.643 2072 87.762 2073 87.882 2074 88.004 2075 88.125 2076 88.247 2077 88.368 2078 88.489 2079 88.609 2080 88.727 2081 88.845 2082 88.962 2083 89.079 2084 89.196 2085 89.312 2086 89.427 2087 89.542 2088 89.657 2089 89.772 2090 89.886 2091 90 2092 90.114 2093 90.227 2094 90.341 2095 90.455 2096 90.569 2097 90.683 2098 90.797 2099 90.911