Year Years 1950 68.815 1951 69.02 1952 69.421 1953 69.805 1954 70.171 1955 70.52 1956 70.85 1957 71.164 1958 71.459 1959 71.737 1960 71.997 1961 72.238 1962 72.462 1963 72.669 1964 72.861 1965 73.036 1966 73.194 1967 73.335 1968 73.464 1969 73.588 1970 73.715 1971 73.856 1972 74.017 1973 74.201 1974 74.412 1975 74.647 1976 74.904 1977 75.173 1978 75.449 1979 75.725 1980 76 1981 76.273 1982 76.545 1983 76.815 1984 77.083 1985 77.346 1986 77.601 1987 77.849 1988 78.09 1989 78.325 1990 78.556 1991 78.786 1992 79.019 1993 79.255 1994 79.495 1995 79.738 1996 79.984 1997 80.228 1998 80.468 1999 80.703 2000 80.93 2001 81.152 2002 81.366 2003 81.574 2004 81.772 2005 81.959 2006 82.13 2007 82.284 2008 82.422 2009 82.546 2010 82.66 2011 82.768 2012 82.877 2013 82.989 2014 83.107 2015 83.233 2016 83.364 2017 83.498 2018 83.632 2019 83.765 2020 83.897 2021 84.027 2022 84.155 2023 84.283 2024 84.41 2025 84.537 2026 84.663 2027 84.789 2028 84.915 2029 85.041 2030 85.167 2031 85.292 2032 85.417 2033 85.539 2034 85.661 2035 85.782 2036 85.902 2037 86.022 2038 86.143 2039 86.264 2040 86.385 2041 86.507 2042 86.628 2043 86.749 2044 86.87 2045 86.99 2046 87.11 2047 87.231 2048 87.352 2049 87.473 2050 87.595 2051 87.717 2052 87.839 2053 87.96 2054 88.081 2055 88.202 2056 88.321 2057 88.441 2058 88.56 2059 88.678 2060 88.797 2061 88.914 2062 89.031 2063 89.148 2064 89.264 2065 89.38 2066 89.496 2067 89.613 2068 89.73 2069 89.847 2070 89.965 2071 90.083 2072 90.2 2073 90.318 2074 90.434 2075 90.551 2076 90.667 2077 90.783 2078 90.898 2079 91.014 2080 91.13 2081 91.246 2082 91.362 2083 91.478 2084 91.594 2085 91.71 2086 91.826 2087 91.942 2088 92.058 2089 92.174 2090 92.29 2091 92.406 2092 92.522 2093 92.638 2094 92.754 2095 92.87 2096 92.986 2097 93.102 2098 93.218 2099 93.334