Year Years 1950 33.674 1951 33.82 1952 34.107 1953 34.386 1954 34.656 1955 34.918 1956 35.171 1957 35.414 1958 35.646 1959 35.864 1960 36.067 1961 36.252 1962 36.42 1963 36.573 1964 36.718 1965 36.861 1966 37.011 1967 37.175 1968 37.363 1969 37.583 1970 37.841 1971 38.141 1972 38.481 1973 38.859 1974 39.277 1975 39.732 1976 40.218 1977 40.733 1978 41.278 1979 41.857 1980 42.486 1981 43.186 1982 43.963 1983 44.814 1984 45.72 1985 46.663 1986 47.618 1987 48.552 1988 49.429 1989 50.22 1990 50.891 1991 51.416 1992 51.798 1993 52.047 1994 52.172 1995 52.171 1996 52.046 1997 51.829 1998 51.571 1999 51.326 2000 51.182 2001 51.229 2002 51.506 2003 52.02 2004 52.753 2005 53.643 2006 54.597 2007 55.513 2008 56.317 2009 56.98 2010 57.51 2011 57.947 2012 58.365 2013 58.821 2014 59.333 2015 59.905 2016 60.526 2017 61.166 2018 61.8 2019 62.418 2020 63.015 2021 63.59 2022 64.147 2023 64.69 2024 65.218 2025 65.73 2026 66.226 2027 66.706 2028 67.17 2029 67.617 2030 68.049 2031 68.465 2032 68.867 2033 69.255 2034 69.63 2035 69.991 2036 70.34 2037 70.676 2038 71 2039 71.312 2040 71.613 2041 71.902 2042 72.18 2043 72.448 2044 72.707 2045 72.958 2046 73.203 2047 73.442 2048 73.676 2049 73.907 2050 74.134 2051 74.357 2052 74.575 2053 74.789 2054 74.997 2055 75.202 2056 75.402 2057 75.598 2058 75.791 2059 75.98 2060 76.166 2061 76.346 2062 76.522 2063 76.693 2064 76.859 2065 77.023 2066 77.186 2067 77.348 2068 77.51 2069 77.674 2070 77.836 2071 77.998 2072 78.157 2073 78.312 2074 78.464 2075 78.612 2076 78.758 2077 78.903 2078 79.047 2079 79.192 2080 79.338 2081 79.483 2082 79.628 2083 79.773 2084 79.915 2085 80.056 2086 80.195 2087 80.331 2088 80.466 2089 80.598 2090 80.729 2091 80.859 2092 80.988 2093 81.117 2094 81.246 2095 81.375 2096 81.504 2097 81.634 2098 81.765 2099 81.896