Year Years 1950 44.877 1951 45.743 1952 47.393 1953 48.876 1954 50.194 1955 51.347 1956 52.338 1957 53.174 1958 53.866 1959 54.433 1960 54.899 1961 55.29 1962 55.637 1963 55.969 1964 56.305 1965 56.659 1966 57.031 1967 57.409 1968 57.782 1969 58.151 1970 58.51 1971 58.855 1972 59.186 1973 59.507 1974 59.827 1975 60.165 1976 60.544 1977 60.975 1978 61.459 1979 61.991 1980 62.548 1981 63.102 1982 63.625 1983 64.098 1984 64.516 1985 64.887 1986 65.23 1987 65.568 1988 65.921 1989 66.291 1990 66.673 1991 67.052 1992 67.414 1993 67.747 1994 68.052 1995 68.333 1996 68.598 1997 68.861 1998 69.136 1999 69.429 2000 69.75 2001 70.108 2002 70.498 2003 70.913 2004 71.343 2005 71.775 2006 72.191 2007 72.577 2008 72.923 2009 73.226 2010 73.486 2011 73.708 2012 73.909 2013 74.099 2014 74.285 2015 74.472 2016 74.662 2017 74.853 2018 75.044 2019 75.235 2020 75.427 2021 75.62 2022 75.812 2023 76.003 2024 76.194 2025 76.384 2026 76.575 2027 76.766 2028 76.958 2029 77.152 2030 77.347 2031 77.543 2032 77.74 2033 77.938 2034 78.135 2035 78.333 2036 78.532 2037 78.731 2038 78.93 2039 79.129 2040 79.329 2041 79.529 2042 79.73 2043 79.93 2044 80.131 2045 80.331 2046 80.531 2047 80.732 2048 80.932 2049 81.131 2050 81.33 2051 81.528 2052 81.725 2053 81.92 2054 82.113 2055 82.303 2056 82.489 2057 82.671 2058 82.848 2059 83.02 2060 83.187 2061 83.349 2062 83.507 2063 83.66 2064 83.81 2065 83.955 2066 84.096 2067 84.234 2068 84.367 2069 84.497 2070 84.625 2071 84.749 2072 84.872 2073 84.994 2074 85.114 2075 85.234 2076 85.353 2077 85.471 2078 85.588 2079 85.705 2080 85.821 2081 85.937 2082 86.054 2083 86.171 2084 86.288 2085 86.406 2086 86.523 2087 86.64 2088 86.755 2089 86.87 2090 86.985 2091 87.099 2092 87.214 2093 87.329 2094 87.445 2095 87.562 2096 87.68 2097 87.799 2098 87.919 2099 88.041