Year	Years
1950	38.74
1951	38.966
1952	39.404
1953	39.816
1954	40.201
1955	40.559
1956	40.891
1957	41.198
1958	41.484
1959	41.752
1960	42.009
1961	42.259
1962	42.512
1963	42.772
1964	43.046
1965	43.338
1966	43.649
1967	43.976
1968	44.316
1969	44.671
1970	45.045
1971	45.446
1972	45.871
1973	46.313
1974	46.761
1975	47.2
1976	47.61
1977	47.978
1978	48.291
1979	48.542
1980	48.732
1981	48.868
1982	48.962
1983	49.023
1984	49.051
1985	49.034
1986	48.952
1987	48.798
1988	48.58
1989	48.316
1990	48.03
1991	47.749
1992	47.507
1993	47.337
1994	47.269
1995	47.327
1996	47.529
1997	47.868
1998	48.335
1999	48.927
2000	49.65
2001	50.505
2002	51.476
2003	52.532
2004	53.639
2005	54.75
2006	55.814
2007	56.803
2008	57.703
2009	58.508
2010	59.243
2011	59.952
2012	60.679
2013	61.45
2014	62.258
2015	63.076
2016	63.856
2017	64.551
2018	65.129
2019	65.582
2020	65.921
2021	66.169
2022	66.369
2023	66.557
2024	66.75
2025	66.962
2026	67.192
2027	67.43
2028	67.666
2029	67.9
2030	68.131
2031	68.358
2032	68.58
2033	68.796
2034	69.005
2035	69.208
2036	69.405
2037	69.596
2038	69.783
2039	69.967
2040	70.149
2041	70.331
2042	70.513
2043	70.696
2044	70.881
2045	71.069
2046	71.261
2047	71.455
2048	71.651
2049	71.849
2050	72.047
2051	72.244
2052	72.44
2053	72.634
2054	72.825
2055	73.013
2056	73.2
2057	73.385
2058	73.569
2059	73.751
2060	73.93
2061	74.105
2062	74.275
2063	74.439
2064	74.597
2065	74.749
2066	74.894
2067	75.034
2068	75.17
2069	75.303
2070	75.434
2071	75.563
2072	75.69
2073	75.816
2074	75.942
2075	76.068
2076	76.193
2077	76.319
2078	76.444
2079	76.568
2080	76.692
2081	76.816
2082	76.938
2083	77.06
2084	77.181
2085	77.302
2086	77.421
2087	77.541
2088	77.661
2089	77.78
2090	77.9
2091	78.02
2092	78.14
2093	78.26
2094	78.38
2095	78.5
2096	78.62
2097	78.74
2098	78.86
2099	78.98