Year	Number
1950	72.916
1951	74.095
1952	75.295
1953	76.25
1954	76.939
1955	77.438
1956	78.716
1957	79.584
1958	80.216
1959	80.737
1960	81.186
1961	82.102
1962	82.879
1963	83.532
1964	84.021
1965	84.312
1966	84.491
1967	84.483
1968	84.302
1969	83.973
1970	83.529
1971	83.571
1972	83.4
1973	83.076
1974	82.656
1975	82.154
1976	82.137
1977	81.949
1978	81.621
1979	81.187
1980	80.669
1981	80.19
1982	79.665
1983	79.044
1984	78.259
1985	77.288
1986	76.726
1987	75.931
1988	74.968
1989	73.914
1990	72.797
1991	71.301
1992	69.717
1993	68.095
1994	66.507
1995	65.019
1996	64.478
1997	64.199
1998	64.064
1999	63.883
2000	63.525
2001	63.12
2002	62.268
2003	61.144
2004	60.032
2005	59.091
2006	58.246
2007	57.733
2008	57.389
2009	56.928
2010	56.227
2011	55.71
2012	54.803
2013	53.728
2014	52.798
2015	52.144
2016	51.649
2017	51.492
2018	51.51
2019	51.425
2020	51.109
2021	50.969
2022	50.589
2023	50.064
2024	49.567
2025	49.177
2026	48.905
2027	48.708
2028	48.55
2029	48.36
2030	48.101
2031	47.917
2032	47.676
2033	47.393
2034	47.101
2035	46.815
2036	46.633
2037	46.45
2038	46.264
2039	46.063
2040	45.841
2041	45.695
2042	45.528
2043	45.368
2044	45.254
2045	45.206
2046	45.31
2047	45.457
2048	45.639
2049	45.851
2050	46.087
2051	46.451
2052	46.83
2053	47.205
2054	47.548
2055	47.844
2056	48.195
2057	48.493
2058	48.754
2059	49.001
2060	49.249
2061	49.584
2062	49.911
2063	50.216
2064	50.475
2065	50.676
2066	50.902
2067	51.068
2068	51.211
2069	51.386
2070	51.622
2071	51.989
2072	52.398
2073	52.83
2074	53.249
2075	53.635
2076	54.069
2077	54.465
2078	54.835
2079	55.194
2080	55.55
2081	55.987
2082	56.415
2083	56.825
2084	57.203
2085	57.544
2086	57.932
2087	58.28
2088	58.597
2089	58.89
2090	59.165
2091	59.485
2092	59.784
2093	60.064
2094	60.331
2095	60.591
2096	60.899
2097	61.194
2098	61.481
2099	61.765
2100	62.045