Year Years 1950 48.756 1951 48.959 1952 49.362 1953 49.763 1954 50.159 1955 50.553 1956 50.942 1957 51.325 1958 51.703 1959 52.071 1960 52.428 1961 52.771 1962 53.102 1963 53.424 1964 53.745 1965 54.077 1966 54.433 1967 54.824 1968 55.258 1969 55.739 1970 56.272 1971 56.86 1972 57.493 1973 58.156 1974 58.838 1975 59.525 1976 60.207 1977 60.871 1978 61.506 1979 62.097 1980 62.639 1981 63.134 1982 63.582 1983 63.976 1984 64.304 1985 64.56 1986 64.745 1987 64.845 1988 64.836 1989 64.687 1990 64.323 1991 63.661 1992 62.681 1993 61.404 1994 59.889 1995 58.207 1996 56.451 1997 54.746 1998 53.224 1999 51.99 2000 51.163 2001 50.833 2002 50.985 2003 51.58 2004 52.579 2005 53.926 2006 55.539 2007 57.305 2008 59.11 2009 60.868 2010 62.514 2011 64.013 2012 65.382 2013 66.631 2014 67.744 2015 68.708 2016 69.517 2017 70.191 2018 70.753 2019 71.219 2020 71.608 2021 71.938 2022 72.226 2023 72.488 2024 72.739 2025 72.986 2026 73.232 2027 73.468 2028 73.691 2029 73.902 2030 74.103 2031 74.295 2032 74.479 2033 74.656 2034 74.828 2035 74.996 2036 75.162 2037 75.325 2038 75.485 2039 75.644 2040 75.801 2041 75.957 2042 76.11 2043 76.261 2044 76.412 2045 76.563 2046 76.718 2047 76.876 2048 77.039 2049 77.207 2050 77.38 2051 77.558 2052 77.738 2053 77.919 2054 78.1 2055 78.28 2056 78.458 2057 78.635 2058 78.809 2059 78.98 2060 79.147 2061 79.308 2062 79.463 2063 79.612 2064 79.754 2065 79.891 2066 80.023 2067 80.151 2068 80.277 2069 80.4 2070 80.522 2071 80.643 2072 80.762 2073 80.881 2074 81 2075 81.118 2076 81.235 2077 81.353 2078 81.47 2079 81.586 2080 81.702 2081 81.818 2082 81.932 2083 82.046 2084 82.159 2085 82.272 2086 82.384 2087 82.495 2088 82.607 2089 82.719 2090 82.831 2091 82.943 2092 83.054 2093 83.165 2094 83.276 2095 83.387 2096 83.497 2097 83.606 2098 83.715 2099 83.823