Year Years 1950 55.03 1951 55.343 1952 55.968 1953 56.592 1954 57.217 1955 57.842 1956 58.466 1957 59.09 1958 59.714 1959 60.337 1960 60.96 1961 61.582 1962 62.202 1963 62.82 1964 63.437 1965 64.054 1966 64.676 1967 65.303 1968 65.93 1969 66.551 1970 67.155 1971 67.729 1972 68.265 1973 68.755 1974 69.198 1975 69.596 1976 69.956 1977 70.289 1978 70.603 1979 70.9 1980 71.177 1981 71.427 1982 71.646 1983 71.832 1984 71.99 1985 72.121 1986 72.23 1987 72.327 1988 72.424 1989 72.536 1990 72.68 1991 72.875 1992 73.127 1993 73.436 1994 73.797 1995 74.206 1996 74.651 1997 75.113 1998 75.569 1999 76.002 2000 76.394 2001 76.729 2002 77.006 2003 77.226 2004 77.394 2005 77.516 2006 77.605 2007 77.678 2008 77.751 2009 77.834 2010 77.932 2011 78.049 2012 78.179 2013 78.316 2014 78.462 2015 78.612 2016 78.767 2017 78.924 2018 79.079 2019 79.233 2020 79.384 2021 79.532 2022 79.678 2023 79.823 2024 79.967 2025 80.11 2026 80.251 2027 80.391 2028 80.53 2029 80.667 2030 80.804 2031 80.939 2032 81.074 2033 81.207 2034 81.34 2035 81.472 2036 81.604 2037 81.736 2038 81.867 2039 81.997 2040 82.127 2041 82.257 2042 82.385 2043 82.513 2044 82.64 2045 82.767 2046 82.893 2047 83.019 2048 83.145 2049 83.271 2050 83.397 2051 83.523 2052 83.647 2053 83.771 2054 83.893 2055 84.014 2056 84.133 2057 84.251 2058 84.368 2059 84.485 2060 84.601 2061 84.717 2062 84.834 2063 84.951 2064 85.068 2065 85.186 2066 85.303 2067 85.421 2068 85.537 2069 85.653 2070 85.767 2071 85.881 2072 85.994 2073 86.107 2074 86.219 2075 86.331 2076 86.443 2077 86.555 2078 86.666 2079 86.778 2080 86.89 2081 87.002 2082 87.114 2083 87.226 2084 87.338 2085 87.45 2086 87.562 2087 87.674 2088 87.786 2089 87.898 2090 88.01 2091 88.122 2092 88.234 2093 88.346 2094 88.458 2095 88.57 2096 88.682 2097 88.794 2098 88.906 2099 89.018