Year	Number
1950	53.863
1951	53.369
1952	52.327
1953	51.446
1954	51.164
1955	51.591
1956	52.498
1957	54.037
1958	55.931
1959	57.768
1960	59.287
1961	60.879
1962	61.98
1963	62.684
1964	63.182
1965	63.55
1966	63.531
1967	63.347
1968	62.933
1969	62.24
1970	61.288
1971	59.833
1972	58.529
1973	57.344
1974	56.214
1975	55.102
1976	54.292
1977	53.314
1978	52.277
1979	51.345
1980	50.602
1981	49.939
1982	49.442
1983	49.111
1984	48.898
1985	48.786
1986	49.13
1987	49.462
1988	49.776
1989	50.117
1990	50.497
1991	51.017
1992	51.489
1993	51.825
1994	51.905
1995	51.668
1996	50.976
1997	50.117
1998	49.107
1999	48.024
2000	46.949
2001	46.288
2002	45.678
2003	45.059
2004	44.351
2005	43.52
2006	42.886
2007	42.089
2008	41.296
2009	40.715
2010	40.456
2011	40.667
2012	41.12
2013	41.72
2014	42.345
2015	42.957
2016	44.175
2017	45.297
2018	46.372
2019	47.478
2020	48.632
2021	49.783
2022	51.043
2023	52.284
2024	53.33
2025	54.102
2026	55.026
2027	55.654
2028	56.004
2029	56.137
2030	56.086
2031	56.012
2032	55.795
2033	55.491
2034	55.165
2035	54.879
2036	54.859
2037	54.896
2038	54.983
2039	55.107
2040	55.264
2041	55.691
2042	56.129
2043	56.612
2044	57.176
2045	57.831
2046	58.81
2047	59.838
2048	60.91
2049	62.021
2050	63.156
2051	64.549
2052	65.955
2053	67.278
2054	68.382
2055	69.173
2056	69.879
2057	70.318
2058	70.442
2059	70.212
2060	69.636
2061	68.938
2062	67.937
2063	66.754
2064	65.549
2065	64.417
2066	63.523
2067	62.724
2068	62.017
2069	61.386
2070	60.835
2071	60.551
2072	60.351
2073	60.266
2074	60.337
2075	60.576
2076	61.147
2077	61.881
2078	62.711
2079	63.524
2080	64.233
2081	65.003
2082	65.697
2083	66.301
2084	66.811
2085	67.228
2086	67.667
2087	68.038
2088	68.314
2089	68.48
2090	68.541
2091	68.537
2092	68.441
2093	68.278
2094	68.079
2095	67.862
2096	67.577
2097	67.299
2098	67.047
2099	66.837
2100	66.683