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