Year Years 1950 54.959 1951 55.232 1952 55.771 1953 56.293 1954 56.8 1955 57.291 1956 57.765 1957 58.225 1958 58.669 1959 59.097 1960 59.512 1961 59.912 1962 60.3 1963 60.676 1964 61.042 1965 61.399 1966 61.748 1967 62.091 1968 62.427 1969 62.757 1970 63.083 1971 63.403 1972 63.719 1973 64.028 1974 64.333 1975 64.633 1976 64.929 1977 65.221 1978 65.508 1979 65.791 1980 66.071 1981 66.347 1982 66.618 1983 66.885 1984 67.149 1985 67.409 1986 67.665 1987 67.918 1988 68.169 1989 68.416 1990 68.661 1991 68.904 1992 69.143 1993 69.38 1994 69.613 1995 69.845 1996 70.073 1997 70.3 1998 70.525 1999 70.747 2000 70.969 2001 71.191 2002 71.413 2003 71.633 2004 71.852 2005 72.063 2006 72.265 2007 72.454 2008 72.63 2009 72.793 2010 72.945 2011 73.091 2012 73.234 2013 73.38 2014 73.528 2015 73.681 2016 73.838 2017 73.996 2018 74.154 2019 74.313 2020 74.471 2021 74.63 2022 74.791 2023 74.954 2024 75.119 2025 75.285 2026 75.454 2027 75.623 2028 75.792 2029 75.962 2030 76.132 2031 76.303 2032 76.474 2033 76.645 2034 76.818 2035 76.991 2036 77.166 2037 77.341 2038 77.518 2039 77.697 2040 77.876 2041 78.057 2042 78.239 2043 78.422 2044 78.605 2045 78.789 2046 78.973 2047 79.157 2048 79.34 2049 79.523 2050 79.705 2051 79.887 2052 80.07 2053 80.253 2054 80.436 2055 80.62 2056 80.805 2057 80.99 2058 81.174 2059 81.358 2060 81.541 2061 81.723 2062 81.902 2063 82.079 2064 82.252 2065 82.423 2066 82.589 2067 82.752 2068 82.912 2069 83.068 2070 83.22 2071 83.367 2072 83.511 2073 83.649 2074 83.785 2075 83.916 2076 84.045 2077 84.171 2078 84.296 2079 84.419 2080 84.541 2081 84.662 2082 84.781 2083 84.899 2084 85.014 2085 85.129 2086 85.243 2087 85.355 2088 85.468 2089 85.58 2090 85.692 2091 85.803 2092 85.915 2093 86.026 2094 86.136 2095 86.247 2096 86.357 2097 86.466 2098 86.575 2099 86.683