Year Years 1950 46.184 1951 46.389 1952 46.798 1953 47.205 1954 47.61 1955 48.014 1956 48.416 1957 48.814 1958 49.21 1959 49.599 1960 49.981 1961 50.353 1962 50.714 1963 51.062 1964 51.398 1965 51.723 1966 52.036 1967 52.343 1968 52.646 1969 52.951 1970 53.263 1971 53.584 1972 53.918 1973 54.268 1974 54.636 1975 55.038 1976 55.491 1977 55.994 1978 56.531 1979 57.075 1980 57.598 1981 58.068 1982 58.446 1983 58.695 1984 58.783 1985 58.673 1986 58.337 1987 57.783 1988 57.031 1989 56.098 1990 54.995 1991 53.736 1992 52.362 1993 50.928 1994 49.489 1995 48.093 1996 46.776 1997 45.568 1998 44.506 1999 43.639 2000 43.016 2001 42.671 2002 42.606 2003 42.816 2004 43.304 2005 44.089 2006 45.189 2007 46.57 2008 48.167 2009 49.905 2010 51.69 2011 53.425 2012 55.036 2013 56.461 2014 57.657 2015 58.593 2016 59.274 2017 59.762 2018 60.12 2019 60.384 2020 60.594 2021 60.786 2022 60.981 2023 61.199 2024 61.457 2025 61.763 2026 62.111 2027 62.48 2028 62.852 2029 63.221 2030 63.582 2031 63.934 2032 64.279 2033 64.617 2034 64.947 2035 65.268 2036 65.579 2037 65.881 2038 66.175 2039 66.463 2040 66.746 2041 67.025 2042 67.303 2043 67.581 2044 67.858 2045 68.135 2046 68.412 2047 68.687 2048 68.958 2049 69.224 2050 69.483 2051 69.735 2052 69.978 2053 70.214 2054 70.442 2055 70.664 2056 70.88 2057 71.093 2058 71.303 2059 71.512 2060 71.719 2061 71.926 2062 72.131 2063 72.334 2064 72.534 2065 72.731 2066 72.927 2067 73.12 2068 73.31 2069 73.496 2070 73.678 2071 73.855 2072 74.025 2073 74.19 2074 74.349 2075 74.501 2076 74.649 2077 74.793 2078 74.935 2079 75.074 2080 75.212 2081 75.349 2082 75.485 2083 75.62 2084 75.754 2085 75.888 2086 76.022 2087 76.154 2088 76.286 2089 76.417 2090 76.547 2091 76.677 2092 76.806 2093 76.935 2094 77.064 2095 77.192 2096 77.319 2097 77.447 2098 77.574 2099 77.701