Year	Number
1950	51.08
1951	52.148
1952	52.976
1953	53.865
1954	54.856
1955	55.849
1956	56.411
1957	57.198
1958	57.952
1959	58.456
1960	58.648
1961	58.92
1962	58.784
1963	58.423
1964	58.139
1965	58.087
1966	58.184
1967	58.509
1968	58.97
1969	59.377
1970	59.626
1971	59.989
1972	60.114
1973	60.081
1974	60.002
1975	59.912
1976	59.748
1977	59.542
1978	59.268
1979	58.893
1980	58.416
1981	57.796
1982	57.184
1983	56.573
1984	55.977
1985	55.431
1986	55.164
1987	54.896
1988	54.661
1989	54.495
1990	54.404
1991	54.486
1992	54.589
1993	54.711
1994	54.815
1995	54.865
1996	54.893
1997	54.853
1998	54.742
1999	54.55
2000	54.268
2001	53.95
2002	53.56
2003	53.126
2004	52.707
2005	52.357
2006	51.889
2007	51.53
2008	51.282
2009	51.137
2010	51.091
2011	51.057
2012	51.131
2013	51.377
2014	51.77
2015	52.21
2016	52.772
2017	53.328
2018	53.873
2019	54.4
2020	54.915
2021	55.576
2022	56.207
2023	56.818
2024	57.43
2025	58.051
2026	58.582
2027	59.131
2028	59.704
2029	60.305
2030	60.944
2031	61.54
2032	62.168
2033	62.811
2034	63.456
2035	64.093
2036	64.591
2037	65.085
2038	65.569
2039	65.995
2040	66.322
2041	66.443
2042	66.515
2043	66.551
2044	66.602
2045	66.726
2046	66.841
2047	67.028
2048	67.301
2049	67.65
2050	68.048
2051	68.334
2052	68.693
2053	69.105
2054	69.554
2055	70.04
2056	70.412
2057	70.831
2058	71.281
2059	71.726
2060	72.129
2061	72.31
2062	72.489
2063	72.655
2064	72.794
2065	72.907
2066	72.84
2067	72.787
2068	72.755
2069	72.769
2070	72.858
2071	72.831
2072	72.89
2073	73.036
2074	73.251
2075	73.507
2076	73.556
2077	73.671
2078	73.85
2079	74.095
2080	74.411
2081	74.558
2082	74.796
2083	75.115
2084	75.493
2085	75.909
2086	76.112
2087	76.381
2088	76.702
2089	77.062
2090	77.462
2091	77.641
2092	77.869
2093	78.147
2094	78.475
2095	78.85
2096	78.972
2097	79.147
2098	79.376
2099	79.664
2100	80.009