Year	Number
1950	64.062
1951	64.406
1952	64.764
1953	64.762
1954	64.115
1955	62.864
1956	61.113
1957	59.649
1958	58.88
1959	59.097
1960	60.523
1961	60.875
1962	60.827
1963	61.381
1964	62.612
1965	64.252
1966	68.347
1967	72.284
1968	76.314
1969	80.337
1970	83.996
1971	85.577
1972	87.195
1973	88.492
1974	88.98
1975	88.455
1976	85.639
1977	82.244
1978	78.697
1979	75.433
1980	72.57
1981	69.909
1982	67.5
1983	65.389
1984	63.34
1985	61.239
1986	61.709
1987	61.152
1988	59.974
1989	58.583
1990	57.074
1991	53.471
1992	50.771
1993	48.772
1994	47.337
1995	46.615
1996	45.383
1997	44.452
1998	43.732
1999	43.003
2000	42.129
2001	41.717
2002	40.951
2003	40.206
2004	39.841
2005	39.924
2006	38.363
2007	37.146
2008	36.164
2009	35.177
2010	34.103
2011	33.867
2012	33.332
2013	32.74
2014	32.316
2015	32.09
2016	32.614
2017	33.251
2018	33.968
2019	34.615
2020	35.087
2021	35.598
2022	35.842
2023	35.919
2024	35.935
2025	35.92
2026	35.717
2027	35.491
2028	35.269
2029	35.051
2030	34.836
2031	34.755
2032	34.64
2033	34.552
2034	34.549
2035	34.651
2036	34.846
2037	35.108
2038	35.457
2039	35.867
2040	36.315
2041	36.79
2042	37.261
2043	37.797
2044	38.475
2045	39.324
2046	40.304
2047	41.387
2048	42.559
2049	43.762
2050	44.942
2051	46.051
2052	47.094
2053	48.079
2054	48.996
2055	49.827
2056	50.518
2057	51.069
2058	51.527
2059	51.933
2060	52.305
2061	52.606
2062	52.84
2063	53.027
2064	53.137
2065	53.15
2066	53.068
2067	52.878
2068	52.653
2069	52.475
2070	52.391
2071	52.424
2072	52.51
2073	52.676
2074	52.921
2075	53.231
2076	53.649
2077	54.111
2078	54.633
2079	55.217
2080	55.85
2081	56.575
2082	57.335
2083	58.112
2084	58.861
2085	59.544
2086	60.17
2087	60.716
2088	61.206
2089	61.657
2090	62.066
2091	62.397
2092	62.686
2093	62.948
2094	63.194
2095	63.429
2096	63.594
2097	63.743
2098	63.9
2099	64.091
2100	64.325