Year Years 1950 31.238 1951 31.437 1952 31.834 1953 32.229 1954 32.622 1955 33.012 1956 33.4 1957 33.786 1958 34.172 1959 34.558 1960 34.948 1961 35.344 1962 35.75 1963 36.174 1964 36.62 1965 37.1 1966 37.623 1967 38.191 1968 38.803 1969 39.457 1970 40.152 1971 40.887 1972 41.649 1973 42.421 1974 43.184 1975 43.919 1976 44.608 1977 45.239 1978 45.8 1979 46.281 1980 46.675 1981 46.981 1982 47.21 1983 47.368 1984 47.459 1985 47.482 1986 47.434 1987 47.317 1988 47.136 1989 46.897 1990 46.602 1991 46.252 1992 45.853 1993 45.42 1994 44.969 1995 44.514 1996 44.064 1997 43.633 1998 43.24 1999 42.908 2000 42.666 2001 42.537 2002 42.529 2003 42.645 2004 42.883 2005 43.236 2006 43.692 2007 44.225 2008 44.81 2009 45.432 2010 46.081 2011 46.756 2012 47.458 2013 48.182 2014 48.913 2015 49.632 2016 50.323 2017 50.974 2018 51.581 2019 52.139 2020 52.652 2021 53.128 2022 53.582 2023 54.028 2024 54.471 2025 54.917 2026 55.366 2027 55.815 2028 56.261 2029 56.703 2030 57.141 2031 57.574 2032 58.001 2033 58.422 2034 58.835 2035 59.241 2036 59.64 2037 60.031 2038 60.417 2039 60.795 2040 61.168 2041 61.533 2042 61.892 2043 62.245 2044 62.594 2045 62.939 2046 63.284 2047 63.63 2048 63.976 2049 64.323 2050 64.67 2051 65.016 2052 65.36 2053 65.698 2054 66.03 2055 66.354 2056 66.671 2057 66.981 2058 67.285 2059 67.581 2060 67.871 2061 68.155 2062 68.433 2063 68.705 2064 68.971 2065 69.23 2066 69.481 2067 69.722 2068 69.954 2069 70.177 2070 70.391 2071 70.597 2072 70.797 2073 70.993 2074 71.185 2075 71.375 2076 71.564 2077 71.751 2078 71.938 2079 72.124 2080 72.309 2081 72.495 2082 72.68 2083 72.863 2084 73.046 2085 73.227 2086 73.407 2087 73.586 2088 73.763 2089 73.938 2090 74.11 2091 74.278 2092 74.441 2093 74.599 2094 74.751 2095 74.898 2096 75.037 2097 75.171 2098 75.298 2099 75.419