Year Years 1950 42.411 1951 42.825 1952 43.649 1953 44.464 1954 45.27 1955 46.067 1956 46.854 1957 47.629 1958 48.391 1959 49.135 1960 49.857 1961 50.551 1962 51.211 1963 51.832 1964 52.41 1965 52.938 1966 53.415 1967 53.843 1968 54.227 1969 54.574 1970 54.889 1971 55.181 1972 55.457 1973 55.723 1974 55.985 1975 56.251 1976 56.523 1977 56.799 1978 57.073 1979 57.339 1980 57.592 1981 57.827 1982 58.036 1983 58.208 1984 58.329 1985 58.388 1986 58.373 1987 58.278 1988 58.103 1989 57.846 1990 57.494 1991 57.034 1992 56.477 1993 55.849 1994 55.184 1995 54.512 1996 53.864 1997 53.277 1998 52.799 1999 52.476 2000 52.371 2001 52.542 2002 52.993 2003 53.704 2004 54.648 2005 55.778 2006 57.033 2007 58.335 2008 59.611 2009 60.812 2010 61.897 2011 62.852 2012 63.7 2013 64.462 2014 65.14 2015 65.74 2016 66.271 2017 66.748 2018 67.186 2019 67.597 2020 67.99 2021 68.367 2022 68.729 2023 69.077 2024 69.414 2025 69.745 2026 70.073 2027 70.395 2028 70.713 2029 71.028 2030 71.338 2031 71.646 2032 71.948 2033 72.244 2034 72.533 2035 72.814 2036 73.085 2037 73.345 2038 73.596 2039 73.835 2040 74.064 2041 74.282 2042 74.49 2043 74.69 2044 74.884 2045 75.073 2046 75.26 2047 75.447 2048 75.633 2049 75.822 2050 76.011 2051 76.203 2052 76.394 2053 76.584 2054 76.773 2055 76.96 2056 77.146 2057 77.33 2058 77.512 2059 77.693 2060 77.872 2061 78.05 2062 78.226 2063 78.4 2064 78.572 2065 78.742 2066 78.909 2067 79.072 2068 79.231 2069 79.387 2070 79.537 2071 79.682 2072 79.821 2073 79.955 2074 80.085 2075 80.21 2076 80.333 2077 80.455 2078 80.576 2079 80.697 2080 80.818 2081 80.939 2082 81.06 2083 81.18 2084 81.299 2085 81.417 2086 81.535 2087 81.653 2088 81.77 2089 81.886 2090 82.002 2091 82.118 2092 82.233 2093 82.347 2094 82.461 2095 82.573 2096 82.685 2097 82.796 2098 82.906 2099 83.015