Year	Years
1950	39.02
1951	39.259
1952	39.737
1953	40.218
1954	40.703
1955	41.191
1956	41.681
1957	42.174
1958	42.671
1959	43.172
1960	43.677
1961	44.19
1962	44.715
1963	45.262
1964	45.842
1965	46.474
1966	47.177
1967	47.96
1968	48.825
1969	49.769
1970	50.786
1971	51.866
1972	52.987
1973	54.125
1974	55.261
1975	56.375
1976	57.454
1977	58.495
1978	59.492
1979	60.437
1980	61.325
1981	62.158
1982	62.942
1983	63.682
1984	64.378
1985	65.025
1986	65.617
1987	66.152
1988	66.635
1989	67.071
1990	67.469
1991	67.841
1992	68.198
1993	68.548
1994	68.896
1995	69.246
1996	69.599
1997	69.947
1998	70.283
1999	70.6
2000	70.888
2001	71.138
2002	71.344
2003	71.508
2004	71.635
2005	71.735
2006	71.823
2007	71.913
2008	72.017
2009	72.141
2010	72.286
2011	72.448
2012	72.617
2013	72.787
2014	72.953
2015	73.114
2016	73.271
2017	73.424
2018	73.577
2019	73.728
2020	73.878
2021	74.028
2022	74.176
2023	74.324
2024	74.472
2025	74.62
2026	74.768
2027	74.917
2028	75.065
2029	75.215
2030	75.364
2031	75.514
2032	75.664
2033	75.815
2034	75.965
2035	76.115
2036	76.265
2037	76.415
2038	76.564
2039	76.714
2040	76.864
2041	77.014
2042	77.164
2043	77.315
2044	77.466
2045	77.618
2046	77.77
2047	77.924
2048	78.078
2049	78.233
2050	78.388
2051	78.544
2052	78.7
2053	78.856
2054	79.012
2055	79.168
2056	79.325
2057	79.482
2058	79.64
2059	79.798
2060	79.958
2061	80.118
2062	80.279
2063	80.441
2064	80.603
2065	80.765
2066	80.927
2067	81.089
2068	81.251
2069	81.412
2070	81.572
2071	81.733
2072	81.892
2073	82.051
2074	82.21
2075	82.366
2076	82.522
2077	82.675
2078	82.826
2079	82.975
2080	83.12
2081	83.263
2082	83.403
2083	83.54
2084	83.674
2085	83.805
2086	83.934
2087	84.06
2088	84.184
2089	84.305
2090	84.424
2091	84.541
2092	84.656
2093	84.768
2094	84.879
2095	84.988
2096	85.095
2097	85.2
2098	85.303
2099	85.404