Year Years
1950 38.51
1951 38.755
1952 39.236
1953 39.695
1954 40.134
1955 40.552
1956 40.949
1957 41.324
1958 41.68
1959 42.015
1960 42.33
1961 42.63
1962 42.918
1963 43.203
1964 43.495
1965 43.811
1966 44.165
1967 44.565
1968 45.016
1969 45.519
1970 46.067
1971 46.649
1972 47.25
1973 47.86
1974 48.471
1975 49.086
1976 49.708
1977 50.346
1978 51.002
1979 51.676
1980 52.376
1981 53.113
1982 53.879
1983 54.655
1984 55.415
1985 56.135
1986 56.793
1987 57.357
1988 57.789
1989 58.049
1990 58.075
1991 57.81
1992 57.246
1993 56.402
1994 55.309
1995 53.995
1996 52.498
1997 50.9
1998 49.3
1999 47.788
2000 46.469
2001 45.432
2002 44.706
2003 44.305
2004 44.24
2005 44.508
2006 45.081
2007 45.879
2008 46.819
2009 47.843
2010 48.896
2011 49.943
2012 50.968
2013 51.951
2014 52.86
2015 53.667
2016 54.354
2017 54.932
2018 55.421
2019 55.83
2020 56.181
2021 56.496
2022 56.8
2023 57.117
2024 57.458
2025 57.831
2026 58.236
2027 58.657
2028 59.084
2029 59.513
2030 59.943
2031 60.371
2032 60.797
2033 61.221
2034 61.641
2035 62.055
2036 62.464
2037 62.866
2038 63.261
2039 63.648
2040 64.027
2041 64.396
2042 64.756
2043 65.107
2044 65.448
2045 65.78
2046 66.105
2047 66.423
2048 66.735
2049 67.041
2050 67.341
2051 67.635
2052 67.922
2053 68.202
2054 68.475
2055 68.742
2056 69.003
2057 69.259
2058 69.51
2059 69.757
2060 70.001
2061 70.241
2062 70.479
2063 70.713
2064 70.944
2065 71.172
2066 71.396
2067 71.615
2068 71.83
2069 72.039
2070 72.242
2071 72.438
2072 72.627
2073 72.81
2074 72.988
2075 73.16
2076 73.328
2077 73.493
2078 73.657
2079 73.819
2080 73.98
2081 74.141
2082 74.301
2083 74.461
2084 74.619
2085 74.777
2086 74.935
2087 75.092
2088 75.249
2089 75.406
2090 75.562
2091 75.717
2092 75.873
2093 76.028
2094 76.182
2095 76.337
2096 76.49
2097 76.644
2098 76.797
2099 76.949