Year	Number
1950	54.454
1951	56.032
1952	57.504
1953	59.034
1954	60.628
1955	62.206
1956	63.357
1957	64.476
1958	65.448
1959	66.152
1960	66.525
1961	67.062
1962	67.135
1963	66.848
1964	66.341
1965	65.677
1966	64.96
1967	64.113
1968	63.174
1969	62.176
1970	61.136
1971	59.853
1972	58.654
1973	57.494
1974	56.319
1975	55.114
1976	54.407
1977	53.625
1978	52.85
1979	52.18
1980	51.654
1981	51.242
1982	50.93
1983	50.736
1984	50.644
1985	50.631
1986	50.876
1987	51.127
1988	51.375
1989	51.604
1990	51.795
1991	52.115
1992	52.367
1993	52.507
1994	52.486
1995	52.301
1996	52.179
1997	51.861
1998	51.426
1999	50.976
2000	50.55
2001	50.106
2002	49.763
2003	49.458
2004	49.108
2005	48.697
2006	48.717
2007	48.649
2008	48.57
2009	48.584
2010	48.734
2011	48.912
2012	49.212
2013	49.671
2014	50.256
2015	50.912
2016	51.536
2017	52.24
2018	52.992
2019	53.758
2020	54.532
2021	55.474
2022	56.355
2023	57.216
2024	58.116
2025	59.076
2026	60.032
2027	61.042
2028	62.041
2029	62.923
2030	63.628
2031	64.131
2032	64.462
2033	64.668
2034	64.835
2035	65.012
2036	65.149
2037	65.296
2038	65.433
2039	65.514
2040	65.513
2041	65.405
2042	65.238
2043	65.058
2044	64.937
2045	64.919
2046	64.958
2047	65.111
2048	65.344
2049	65.594
2050	65.817
2051	65.977
2052	66.13
2053	66.305
2054	66.544
2055	66.869
2056	67.238
2057	67.714
2058	68.232
2059	68.702
2060	69.081
2061	69.313
2062	69.463
2063	69.579
2064	69.72
2065	69.909
2066	70.014
2067	70.18
2068	70.385
2069	70.609
2070	70.857
2071	71.011
2072	71.199
2073	71.425
2074	71.67
2075	71.904
2076	71.956
2077	72.028
2078	72.113
2079	72.227
2080	72.394
2081	72.46
2082	72.586
2083	72.785
2084	73.045
2085	73.341
2086	73.486
2087	73.704
2088	73.962
2089	74.238
2090	74.538
2091	74.693
2092	74.874
2093	75.1
2094	75.377
2095	75.696
2096	75.809
2097	75.983
2098	76.207
2099	76.462
2100	76.743