Year	Number
1950	53.132
1951	53.124
1952	51.172
1953	49.268
1954	48.415
1955	48.761
1956	49.374
1957	51.287
1958	53.807
1959	56.006
1960	57.36
1961	58.29
1962	58.428
1963	57.943
1964	57.231
1965	56.502
1966	55.541
1967	54.525
1968	53.469
1969	52.398
1970	51.359
1971	50.17
1972	49.222
1973	48.456
1974	47.787
1975	47.187
1976	47.205
1977	47.052
1978	46.842
1979	46.717
1980	46.73
1981	46.731
1982	46.922
1983	47.254
1984	47.594
1985	47.875
1986	48.399
1987	48.793
1988	49.101
1989	49.402
1990	49.718
1991	50.329
1992	50.748
1993	50.935
1994	50.837
1995	50.415
1996	49.302
1997	48.119
1998	46.863
1999	45.557
2000	44.272
2001	43.658
2002	43.041
2003	42.389
2004	41.661
2005	40.83
2006	40.31
2007	39.661
2008	39.09
2009	38.794
2010	38.846
2011	39.246
2012	39.984
2013	40.951
2014	42.008
2015	43.098
2016	44.59
2017	46.043
2018	47.434
2019	48.782
2020	50.073
2021	51.331
2022	52.553
2023	53.664
2024	54.579
2025	55.269
2026	56.027
2027	56.554
2028	56.83
2029	56.837
2030	56.566
2031	56.192
2032	55.597
2033	54.892
2034	54.227
2035	53.713
2036	53.551
2037	53.534
2038	53.635
2039	53.809
2040	54.03
2041	54.541
2042	55.08
2043	55.677
2044	56.361
2045	57.135
2046	58.221
2047	59.338
2048	60.486
2049	61.676
2050	62.901
2051	64.38
2052	65.878
2053	67.263
2054	68.335
2055	68.963
2056	69.376
2057	69.399
2058	69.045
2059	68.368
2060	67.433
2061	66.452
2062	65.239
2063	63.908
2064	62.601
2065	61.4
2066	60.475
2067	59.671
2068	58.975
2069	58.362
2070	57.824
2071	57.59
2072	57.435
2073	57.377
2074	57.442
2075	57.636
2076	58.167
2077	58.812
2078	59.53
2079	60.245
2080	60.894
2081	61.665
2082	62.393
2083	63.049
2084	63.606
2085	64.059
2086	64.532
2087	64.91
2088	65.183
2089	65.351
2090	65.419
2091	65.422
2092	65.333
2093	65.171
2094	64.963
2095	64.727
2096	64.462
2097	64.187
2098	63.929
2099	63.707
2100	63.539