Year Years 1950 67.003 1951 67.138 1952 67.401 1953 67.654 1954 67.897 1955 68.129 1956 68.351 1957 68.563 1958 68.764 1959 68.956 1960 69.137 1961 69.31 1962 69.473 1963 69.63 1964 69.781 1965 69.928 1966 70.071 1967 70.211 1968 70.351 1969 70.492 1970 70.635 1971 70.782 1972 70.933 1973 71.089 1974 71.25 1975 71.418 1976 71.592 1977 71.771 1978 71.957 1979 72.149 1980 72.348 1981 72.555 1982 72.771 1983 72.996 1984 73.229 1985 73.469 1986 73.716 1987 73.97 1988 74.225 1989 74.48 1990 74.729 1991 74.964 1992 75.184 1993 75.389 1994 75.58 1995 75.762 1996 75.939 1997 76.12 1998 76.312 1999 76.518 2000 76.745 2001 76.997 2002 77.273 2003 77.566 2004 77.873 2005 78.184 2006 78.49 2007 78.781 2008 79.054 2009 79.304 2010 79.532 2011 79.741 2012 79.94 2013 80.135 2014 80.331 2015 80.528 2016 80.73 2017 80.934 2018 81.14 2019 81.347 2020 81.555 2021 81.763 2022 81.97 2023 82.175 2024 82.376 2025 82.571 2026 82.76 2027 82.941 2028 83.115 2029 83.281 2030 83.439 2031 83.589 2032 83.733 2033 83.871 2034 84.006 2035 84.136 2036 84.265 2037 84.392 2038 84.518 2039 84.643 2040 84.768 2041 84.894 2042 85.018 2043 85.142 2044 85.264 2045 85.387 2046 85.509 2047 85.631 2048 85.753 2049 85.875 2050 85.997 2051 86.118 2052 86.238 2053 86.356 2054 86.473 2055 86.59 2056 86.707 2057 86.824 2058 86.943 2059 87.063 2060 87.184 2061 87.306 2062 87.427 2063 87.548 2064 87.668 2065 87.786 2066 87.904 2067 88.022 2068 88.14 2069 88.257 2070 88.375 2071 88.493 2072 88.611 2073 88.729 2074 88.847 2075 88.965 2076 89.083 2077 89.201 2078 89.32 2079 89.438 2080 89.556 2081 89.673 2082 89.791 2083 89.907 2084 90.024 2085 90.14 2086 90.256 2087 90.373 2088 90.489 2089 90.607 2090 90.724 2091 90.842 2092 90.96 2093 91.079 2094 91.197 2095 91.315 2096 91.433 2097 91.551 2098 91.669 2099 91.787