Year	Years
1950	40.6
1951	40.846
1952	41.343
1953	41.847
1954	42.357
1955	42.875
1956	43.401
1957	43.935
1958	44.478
1959	45.032
1960	45.598
1961	46.176
1962	46.762
1963	47.35
1964	47.927
1965	48.476
1966	48.98
1967	49.426
1968	49.806
1969	50.116
1970	50.356
1971	50.531
1972	50.655
1973	50.744
1974	50.806
1975	50.852
1976	50.889
1977	50.92
1978	50.942
1979	50.952
1980	50.941
1981	50.897
1982	50.811
1983	50.674
1984	50.487
1985	50.245
1986	49.945
1987	49.6
1988	49.227
1989	48.845
1990	48.466
1991	48.098
1992	47.759
1993	47.474
1994	47.274
1995	47.202
1996	47.302
1997	47.588
1998	48.058
1999	48.703
2000	49.501
2001	50.417
2002	51.402
2003	52.409
2004	53.408
2005	54.381
2006	55.328
2007	56.259
2008	57.177
2009	58.065
2010	58.899
2011	59.654
2012	60.319
2013	60.89
2014	61.369
2015	61.766
2016	62.097
2017	62.389
2018	62.667
2019	62.946
2020	63.239
2021	63.55
2022	63.874
2023	64.206
2024	64.549
2025	64.903
2026	65.266
2027	65.634
2028	66.005
2029	66.374
2030	66.74
2031	67.099
2032	67.451
2033	67.794
2034	68.129
2035	68.455
2036	68.772
2037	69.083
2038	69.389
2039	69.691
2040	69.99
2041	70.288
2042	70.583
2043	70.876
2044	71.166
2045	71.453
2046	71.734
2047	72.008
2048	72.275
2049	72.533
2050	72.78
2051	73.017
2052	73.244
2053	73.461
2054	73.668
2055	73.867
2056	74.055
2057	74.236
2058	74.41
2059	74.578
2060	74.741
2061	74.901
2062	75.058
2063	75.214
2064	75.368
2065	75.521
2066	75.674
2067	75.826
2068	75.976
2069	76.126
2070	76.274
2071	76.422
2072	76.569
2073	76.715
2074	76.86
2075	77.005
2076	77.148
2077	77.289
2078	77.429
2079	77.568
2080	77.705
2081	77.84
2082	77.974
2083	78.108
2084	78.24
2085	78.373
2086	78.506
2087	78.639
2088	78.771
2089	78.904
2090	79.035
2091	79.163
2092	79.288
2093	79.41
2094	79.526
2095	79.638
2096	79.745
2097	79.846
2098	79.942
2099	80.033