Year Years 1950 67.833 1951 68.061 1952 68.511 1953 68.948 1954 69.373 1955 69.785 1956 70.184 1957 70.57 1958 70.944 1959 71.305 1960 71.655 1961 71.993 1962 72.32 1963 72.636 1964 72.943 1965 73.241 1966 73.53 1967 73.81 1968 74.082 1969 74.346 1970 74.603 1971 74.853 1972 75.097 1973 75.335 1974 75.566 1975 75.792 1976 76.013 1977 76.229 1978 76.439 1979 76.644 1980 76.844 1981 77.039 1982 77.23 1983 77.415 1984 77.597 1985 77.774 1986 77.949 1987 78.12 1988 78.288 1989 78.453 1990 78.616 1991 78.776 1992 78.934 1993 79.088 1994 79.24 1995 79.389 1996 79.536 1997 79.681 1998 79.825 1999 79.967 2000 80.106 2001 80.24 2002 80.368 2003 80.494 2004 80.618 2005 80.748 2006 80.892 2007 81.053 2008 81.232 2009 81.428 2010 81.634 2011 81.84 2012 82.039 2013 82.222 2014 82.388 2015 82.536 2016 82.669 2017 82.795 2018 82.918 2019 83.042 2020 83.169 2021 83.297 2022 83.427 2023 83.556 2024 83.684 2025 83.812 2026 83.94 2027 84.066 2028 84.192 2029 84.317 2030 84.442 2031 84.566 2032 84.69 2033 84.814 2034 84.938 2035 85.062 2036 85.185 2037 85.308 2038 85.43 2039 85.552 2040 85.672 2041 85.792 2042 85.911 2043 86.03 2044 86.149 2045 86.267 2046 86.384 2047 86.501 2048 86.617 2049 86.733 2050 86.849 2051 86.966 2052 87.084 2053 87.202 2054 87.321 2055 87.441 2056 87.56 2057 87.679 2058 87.796 2059 87.912 2060 88.027 2061 88.141 2062 88.254 2063 88.367 2064 88.48 2065 88.594 2066 88.708 2067 88.824 2068 88.94 2069 89.057 2070 89.175 2071 89.293 2072 89.41 2073 89.526 2074 89.642 2075 89.757 2076 89.871 2077 89.985 2078 90.099 2079 90.213 2080 90.327 2081 90.44 2082 90.552 2083 90.664 2084 90.775 2085 90.885 2086 90.996 2087 91.106 2088 91.218 2089 91.331 2090 91.444 2091 91.558 2092 91.672 2093 91.786 2094 91.899 2095 92.012 2096 92.124 2097 92.235 2098 92.346 2099 92.456