Year Years 1950 55.954 1951 56.151 1952 56.544 1953 56.937 1954 57.329 1955 57.721 1956 58.112 1957 58.504 1958 58.896 1959 59.29 1960 59.686 1961 60.086 1962 60.488 1963 60.892 1964 61.294 1965 61.688 1966 62.069 1967 62.432 1968 62.775 1969 63.098 1970 63.408 1971 63.714 1972 64.024 1973 64.336 1974 64.646 1975 64.937 1976 65.187 1977 65.382 1978 65.518 1979 65.599 1980 65.646 1981 65.685 1982 65.741 1983 65.83 1984 65.951 1985 66.089 1986 66.213 1987 66.298 1988 66.329 1989 66.311 1990 66.264 1991 66.214 1992 66.197 1993 66.236 1994 66.343 1995 66.526 1996 66.788 1997 67.106 1998 67.454 1999 67.812 2000 68.149 2001 68.438 2002 68.661 2003 68.81 2004 68.883 2005 68.883 2006 68.822 2007 68.728 2008 68.628 2009 68.539 2010 68.48 2011 68.463 2012 68.489 2013 68.557 2014 68.666 2015 68.811 2016 68.984 2017 69.172 2018 69.364 2019 69.553 2020 69.735 2021 69.911 2022 70.083 2023 70.255 2024 70.428 2025 70.6 2026 70.771 2027 70.942 2028 71.113 2029 71.284 2030 71.456 2031 71.629 2032 71.804 2033 71.981 2034 72.16 2035 72.341 2036 72.523 2037 72.706 2038 72.889 2039 73.072 2040 73.254 2041 73.436 2042 73.618 2043 73.8 2044 73.983 2045 74.167 2046 74.351 2047 74.537 2048 74.724 2049 74.912 2050 75.101 2051 75.291 2052 75.483 2053 75.675 2054 75.868 2055 76.062 2056 76.257 2057 76.452 2058 76.649 2059 76.846 2060 77.044 2061 77.243 2062 77.441 2063 77.639 2064 77.836 2065 78.033 2066 78.229 2067 78.425 2068 78.619 2069 78.812 2070 79.003 2071 79.192 2072 79.378 2073 79.562 2074 79.743 2075 79.921 2076 80.096 2077 80.269 2078 80.438 2079 80.605 2080 80.768 2081 80.928 2082 81.084 2083 81.235 2084 81.383 2085 81.527 2086 81.668 2087 81.806 2088 81.942 2089 82.076 2090 82.208 2091 82.339 2092 82.468 2093 82.595 2094 82.72 2095 82.843 2096 82.964 2097 83.083 2098 83.2 2099 83.315