Year	Number
1950	68.647
1951	71.539
1952	72.582
1953	73.801
1954	75.875
1955	78.632
1956	78.803
1957	81.16
1958	84.624
1959	87.768
1960	89.649
1961	88.557
1962	85.749
1963	81.86
1964	77.963
1965	74.593
1966	70.958
1967	67.773
1968	65.025
1969	62.654
1970	60.654
1971	58.355
1972	56.713
1973	55.447
1974	54.258
1975	53.06
1976	52.457
1977	51.655
1978	50.849
1979	50.29
1980	50.054
1981	50.153
1982	50.269
1983	50.435
1984	50.66
1985	50.94
1986	50.96
1987	51.274
1988	51.655
1989	51.814
1990	51.64
1991	51.758
1992	51.409
1993	50.793
1994	50.208
1995	49.8
1996	49.287
1997	48.955
1998	48.74
1999	48.506
2000	48.178
2001	48.026
2002	47.888
2003	47.755
2004	47.625
2005	47.536
2006	46.883
2007	46.503
2008	46.495
2009	46.946
2010	47.844
2011	48.281
2012	48.876
2013	49.55
2014	50.204
2015	50.785
2016	51.319
2017	51.789
2018	52.258
2019	52.8
2020	53.451
2021	54.177
2022	55.004
2023	55.905
2024	56.864
2025	57.886
2026	58.916
2027	59.996
2028	61.104
2029	62.174
2030	63.139
2031	63.957
2032	64.655
2033	65.261
2034	65.837
2035	66.442
2036	66.942
2037	67.441
2038	67.999
2039	68.669
2040	69.462
2041	70.242
2042	71.247
2043	72.317
2044	73.239
2045	73.913
2046	74.318
2047	74.502
2048	74.573
2049	74.687
2050	74.932
2051	75.136
2052	75.462
2053	75.95
2054	76.629
2055	77.519
2056	78.455
2057	79.652
2058	81.041
2059	82.506
2060	83.973
2061	85.229
2062	86.484
2063	87.705
2064	88.851
2065	89.875
2066	90.419
2067	90.82
2068	91.117
2069	91.331
2070	91.443
2071	91.154
2072	90.874
2073	90.529
2074	90.097
2075	89.626
2076	88.905
2077	88.18
2078	87.52
2079	86.976
2080	86.55
2081	85.854
2082	85.298
2083	84.907
2084	84.662
2085	84.547
2086	84.256
2087	84.163
2088	84.239
2089	84.455
2090	84.824
2091	85.079
2092	85.512
2093	86.1
2094	86.811
2095	87.612
2096	88.173
2097	88.803
2098	89.464
2099	90.13
2100	90.787