Year	Years
1950	41.21
1951	41.353
1952	41.622
1953	41.862
1954	42.073
1955	42.255
1956	42.413
1957	42.55
1958	42.673
1959	42.795
1960	42.932
1961	43.093
1962	43.284
1963	43.497
1964	43.708
1965	43.934
1966	44.202
1967	44.466
1968	44.632
1969	44.58
1970	43.936
1971	42.262
1972	39.456
1973	35.674
1974	31.262
1975	26.991
1976	23.806
1977	22.394
1978	23.113
1979	25.944
1980	30.491
1981	36.036
1982	41.618
1983	46.461
1984	50.213
1985	52.722
1986	54.102
1987	54.822
1988	55.281
1989	55.616
1990	55.922
1991	56.237
1992	56.533
1993	56.804
1994	57.093
1995	57.446
1996	57.895
1997	58.439
1998	59.076
1999	59.805
2000	60.624
2001	61.525
2002	62.477
2003	63.444
2004	64.4
2005	65.312
2006	66.15
2007	66.904
2008	67.569
2009	68.145
2010	68.638
2011	69.065
2012	69.453
2013	69.827
2014	70.196
2015	70.57
2016	70.949
2017	71.324
2018	71.69
2019	72.046
2020	72.393
2021	72.73
2022	73.057
2023	73.375
2024	73.684
2025	73.984
2026	74.276
2027	74.558
2028	74.833
2029	75.1
2030	75.359
2031	75.611
2032	75.855
2033	76.093
2034	76.325
2035	76.552
2036	76.773
2037	76.989
2038	77.2
2039	77.408
2040	77.611
2041	77.811
2042	78.007
2043	78.199
2044	78.388
2045	78.574
2046	78.756
2047	78.935
2048	79.111
2049	79.283
2050	79.453
2051	79.618
2052	79.78
2053	79.939
2054	80.095
2055	80.248
2056	80.4
2057	80.55
2058	80.699
2059	80.848
2060	80.996
2061	81.142
2062	81.287
2063	81.43
2064	81.571
2065	81.71
2066	81.848
2067	81.985
2068	82.122
2069	82.258
2070	82.394
2071	82.529
2072	82.663
2073	82.796
2074	82.926
2075	83.055
2076	83.183
2077	83.308
2078	83.433
2079	83.556
2080	83.678
2081	83.8
2082	83.921
2083	84.042
2084	84.162
2085	84.282
2086	84.402
2087	84.521
2088	84.639
2089	84.756
2090	84.872
2091	84.988
2092	85.103
2093	85.218
2094	85.332
2095	85.447
2096	85.56
2097	85.674
2098	85.787
2099	85.9