Year	Years
1950	39.2
1951	39.487
1952	40.066
1953	40.657
1954	41.259
1955	41.871
1956	42.49
1957	43.111
1958	43.724
1959	44.313
1960	44.859
1961	45.344
1962	45.752
1963	46.076
1964	46.321
1965	46.5
1966	46.633
1967	46.753
1968	46.888
1969	47.057
1970	47.277
1971	47.555
1972	47.885
1973	48.261
1974	48.682
1975	49.152
1976	49.67
1977	50.231
1978	50.82
1979	51.426
1980	52.029
1981	52.61
1982	53.158
1983	53.665
1984	54.131
1985	54.588
1986	55.085
1987	55.638
1988	56.227
1989	56.804
1990	57.27
1991	57.504
1992	57.423
1993	56.981
1994	56.179
1995	55.027
1996	53.565
1997	51.917
1998	50.219
1999	48.586
2000	47.159
2001	46.067
2002	45.35
2003	45.019
2004	45.067
2005	45.448
2006	46.072
2007	46.811
2008	47.555
2009	48.246
2010	48.85
2011	49.369
2012	49.849
2013	50.326
2014	50.802
2015	51.274
2016	51.74
2017	52.197
2018	52.644
2019	53.082
2020	53.515
2021	53.949
2022	54.387
2023	54.834
2024	55.291
2025	55.759
2026	56.238
2027	56.722
2028	57.21
2029	57.698
2030	58.186
2031	58.673
2032	59.159
2033	59.643
2034	60.123
2035	60.598
2036	61.069
2037	61.535
2038	61.995
2039	62.448
2040	62.894
2041	63.33
2042	63.758
2043	64.176
2044	64.584
2045	64.978
2046	65.36
2047	65.727
2048	66.081
2049	66.42
2050	66.745
2051	67.055
2052	67.351
2053	67.634
2054	67.907
2055	68.171
2056	68.427
2057	68.677
2058	68.924
2059	69.167
2060	69.408
2061	69.648
2062	69.885
2063	70.12
2064	70.351
2065	70.581
2066	70.809
2067	71.035
2068	71.259
2069	71.48
2070	71.698
2071	71.91
2072	72.116
2073	72.315
2074	72.507
2075	72.693
2076	72.873
2077	73.048
2078	73.221
2079	73.392
2080	73.562
2081	73.731
2082	73.899
2083	74.066
2084	74.233
2085	74.399
2086	74.564
2087	74.728
2088	74.891
2089	75.053
2090	75.213
2091	75.373
2092	75.532
2093	75.69
2094	75.849
2095	76.006
2096	76.164
2097	76.322
2098	76.479
2099	76.636