Year	Years
1950	42.657
1951	42.936
1952	43.502
1953	44.08
1954	44.67
1955	45.272
1956	45.881
1957	46.494
1958	47.1
1959	47.683
1960	48.225
1961	48.708
1962	49.115
1963	49.439
1964	49.684
1965	49.863
1966	49.995
1967	50.109
1968	50.236
1969	50.394
1970	50.601
1971	50.866
1972	51.184
1973	51.55
1974	51.966
1975	52.434
1976	52.957
1977	53.526
1978	54.128
1979	54.75
1980	55.372
1981	55.971
1982	56.537
1983	57.063
1984	57.546
1985	58.027
1986	58.559
1987	59.16
1988	59.808
1989	60.449
1990	60.973
1991	61.249
1992	61.181
1993	60.716
1994	59.849
1995	58.579
1996	56.937
1997	55.053
1998	53.082
1999	51.159
2000	49.454
2001	48.124
2002	47.235
2003	46.816
2004	46.874
2005	47.373
2006	48.23
2007	49.296
2008	50.43
2009	51.542
2010	52.563
2011	53.453
2012	54.231
2013	54.916
2014	55.499
2015	55.981
2016	56.37
2017	56.698
2018	56.994
2019	57.275
2020	57.559
2021	57.859
2022	58.177
2023	58.516
2024	58.88
2025	59.271
2026	59.687
2027	60.121
2028	60.566
2029	61.018
2030	61.476
2031	61.94
2032	62.41
2033	62.886
2034	63.365
2035	63.848
2036	64.333
2037	64.818
2038	65.304
2039	65.788
2040	66.268
2041	66.746
2042	67.219
2043	67.687
2044	68.145
2045	68.591
2046	69.02
2047	69.43
2048	69.821
2049	70.189
2050	70.535
2051	70.858
2052	71.16
2053	71.446
2054	71.718
2055	71.98
2056	72.234
2057	72.483
2058	72.729
2059	72.974
2060	73.22
2061	73.466
2062	73.71
2063	73.952
2064	74.192
2065	74.429
2066	74.665
2067	74.898
2068	75.131
2069	75.36
2070	75.588
2071	75.812
2072	76.033
2073	76.25
2074	76.462
2075	76.669
2076	76.869
2077	77.064
2078	77.254
2079	77.438
2080	77.618
2081	77.795
2082	77.968
2083	78.139
2084	78.31
2085	78.479
2086	78.649
2087	78.818
2088	78.987
2089	79.155
2090	79.323
2091	79.491
2092	79.657
2093	79.823
2094	79.987
2095	80.15
2096	80.312
2097	80.472
2098	80.63
2099	80.788