Year Years 1950 55.796 1951 56.02 1952 56.467 1953 56.914 1954 57.36 1955 57.807 1956 58.253 1957 58.7 1958 59.149 1959 59.6 1960 60.056 1961 60.519 1962 60.991 1963 61.477 1964 61.979 1965 62.502 1966 63.047 1967 63.617 1968 64.209 1969 64.825 1970 65.463 1971 66.125 1972 66.808 1973 67.505 1974 68.212 1975 68.925 1976 69.643 1977 70.36 1978 71.07 1979 71.762 1980 72.421 1981 73.035 1982 73.596 1983 74.104 1984 74.558 1985 74.964 1986 75.331 1987 75.674 1988 76.006 1989 76.332 1990 76.661 1991 76.992 1992 77.323 1993 77.65 1994 77.971 1995 78.287 1996 78.598 1997 78.9 1998 79.191 1999 79.468 2000 79.723 2001 79.952 2002 80.152 2003 80.324 2004 80.469 2005 80.59 2006 80.691 2007 80.779 2008 80.863 2009 80.948 2010 81.042 2011 81.151 2012 81.275 2013 81.415 2014 81.569 2015 81.736 2016 81.913 2017 82.093 2018 82.272 2019 82.447 2020 82.617 2021 82.781 2022 82.942 2023 83.102 2024 83.26 2025 83.416 2026 83.572 2027 83.726 2028 83.878 2029 84.028 2030 84.177 2031 84.324 2032 84.468 2033 84.611 2034 84.751 2035 84.89 2036 85.028 2037 85.165 2038 85.302 2039 85.438 2040 85.574 2041 85.709 2042 85.843 2043 85.975 2044 86.105 2045 86.234 2046 86.362 2047 86.489 2048 86.616 2049 86.742 2050 86.868 2051 86.993 2052 87.117 2053 87.24 2054 87.361 2055 87.482 2056 87.602 2057 87.722 2058 87.843 2059 87.964 2060 88.086 2061 88.208 2062 88.329 2063 88.45 2064 88.569 2065 88.688 2066 88.805 2067 88.922 2068 89.037 2069 89.152 2070 89.266 2071 89.38 2072 89.494 2073 89.609 2074 89.724 2075 89.84 2076 89.956 2077 90.072 2078 90.187 2079 90.302 2080 90.417 2081 90.53 2082 90.643 2083 90.756 2084 90.869 2085 90.981 2086 91.093 2087 91.205 2088 91.317 2089 91.429 2090 91.541 2091 91.653 2092 91.764 2093 91.875 2094 91.986 2095 92.097 2096 92.207 2097 92.316 2098 92.425 2099 92.533