Year Years 1950 44.795 1951 45.013 1952 45.447 1953 45.878 1954 46.305 1955 46.729 1956 47.148 1957 47.562 1958 47.97 1959 48.369 1960 48.757 1961 49.133 1962 49.496 1963 49.85 1964 50.199 1965 50.554 1966 50.924 1967 51.318 1968 51.743 1969 52.203 1970 52.702 1971 53.245 1972 53.822 1973 54.425 1974 55.044 1975 55.67 1976 56.297 1977 56.916 1978 57.512 1979 58.073 1980 58.591 1981 59.065 1982 59.49 1983 59.854 1984 60.139 1985 60.329 1986 60.413 1987 60.378 1988 60.205 1989 59.872 1990 59.322 1991 58.49 1992 57.373 1993 56.011 1994 54.469 1995 52.834 1996 51.205 1997 49.696 1998 48.418 1999 47.457 2000 46.906 2001 46.831 2002 47.195 2003 47.936 2004 49.001 2005 50.303 2006 51.741 2007 53.214 2008 54.638 2009 55.961 2010 57.178 2011 58.322 2012 59.457 2013 60.617 2014 61.79 2015 62.935 2016 64.001 2017 64.939 2018 65.719 2019 66.335 2020 66.796 2021 67.129 2022 67.382 2023 67.6 2024 67.807 2025 68.017 2026 68.237 2027 68.456 2028 68.667 2029 68.875 2030 69.08 2031 69.284 2032 69.485 2033 69.683 2034 69.877 2035 70.07 2036 70.26 2037 70.449 2038 70.635 2039 70.821 2040 71.005 2041 71.188 2042 71.369 2043 71.55 2044 71.729 2045 71.91 2046 72.091 2047 72.273 2048 72.456 2049 72.641 2050 72.827 2051 73.014 2052 73.201 2053 73.386 2054 73.569 2055 73.748 2056 73.92 2057 74.085 2058 74.242 2059 74.393 2060 74.536 2061 74.675 2062 74.81 2063 74.943 2064 75.076 2065 75.209 2066 75.342 2067 75.475 2068 75.608 2069 75.74 2070 75.872 2071 76.004 2072 76.134 2073 76.264 2074 76.392 2075 76.521 2076 76.649 2077 76.778 2078 76.907 2079 77.036 2080 77.166 2081 77.295 2082 77.424 2083 77.552 2084 77.679 2085 77.806 2086 77.932 2087 78.058 2088 78.185 2089 78.312 2090 78.44 2091 78.568 2092 78.696 2093 78.823 2094 78.95 2095 79.077 2096 79.203 2097 79.328 2098 79.453 2099 79.577