Year	Years
1950	37.4
1951	37.67
1952	38.217
1953	38.78
1954	39.358
1955	39.952
1956	40.559
1957	41.18
1958	41.808
1959	42.44
1960	43.067
1961	43.681
1962	44.274
1963	44.841
1964	45.376
1965	45.88
1966	46.352
1967	46.8
1968	47.231
1969	47.652
1970	48.065
1971	48.471
1972	48.872
1973	49.276
1974	49.689
1975	50.125
1976	50.601
1977	51.119
1978	51.678
1979	52.269
1980	52.88
1981	53.494
1982	54.089
1983	54.647
1984	55.157
1985	55.608
1986	55.997
1987	56.332
1988	56.623
1989	56.875
1990	57.094
1991	57.288
1992	57.465
1993	57.631
1994	57.789
1995	57.937
1996	58.068
1997	58.179
1998	58.271
1999	58.348
2000	58.422
2001	58.506
2002	58.611
2003	58.744
2004	58.912
2005	59.117
2006	59.359
2007	59.631
2008	59.919
2009	60.215
2010	60.506
2011	60.78
2012	61.029
2013	61.25
2014	61.44
2015	61.601
2016	61.737
2017	61.861
2018	61.979
2019	62.097
2020	62.217
2021	62.34
2022	62.461
2023	62.581
2024	62.697
2025	62.812
2026	62.926
2027	63.038
2028	63.149
2029	63.259
2030	63.367
2031	63.474
2032	63.578
2033	63.68
2034	63.78
2035	63.877
2036	63.972
2037	64.065
2038	64.157
2039	64.247
2040	64.338
2041	64.427
2042	64.517
2043	64.607
2044	64.697
2045	64.787
2046	64.876
2047	64.965
2048	65.053
2049	65.141
2050	65.227
2051	65.314
2052	65.4
2053	65.485
2054	65.57
2055	65.655
2056	65.737
2057	65.817
2058	65.895
2059	65.972
2060	66.047
2061	66.121
2062	66.196
2063	66.271
2064	66.348
2065	66.427
2066	66.508
2067	66.59
2068	66.673
2069	66.756
2070	66.839
2071	66.919
2072	66.997
2073	67.072
2074	67.145
2075	67.217
2076	67.287
2077	67.359
2078	67.432
2079	67.506
2080	67.583
2081	67.66
2082	67.738
2083	67.815
2084	67.891
2085	67.968
2086	68.045
2087	68.123
2088	68.203
2089	68.284
2090	68.367
2091	68.451
2092	68.536
2093	68.621
2094	68.706
2095	68.79
2096	68.875
2097	68.959
2098	69.042
2099	69.125