Year	Number
1950	59.398
1951	59.036
1952	58.005
1953	57.245
1954	57.122
1955	57.598
1956	58.823
1957	60.556
1958	62.659
1959	65.077
1960	67.965
1961	73.154
1962	79.113
1963	85.862
1964	92.963
1965	99.676
1966	102.428
1967	104.192
1968	104.911
1969	104.86
1970	104.351
1971	102.84
1972	101.343
1973	99.785
1974	97.919
1975	95.636
1976	93.907
1977	91.683
1978	89.247
1979	87.015
1980	85.196
1981	83.774
1982	82.857
1983	82.312
1984	81.898
1985	81.484
1986	81.702
1987	81.791
1988	81.771
1989	81.691
1990	81.548
1991	81.939
1992	82.009
1993	81.789
1994	81.278
1995	80.435
1996	78.929
1997	77.259
1998	75.384
1999	73.271
2000	70.948
2001	68.651
2002	66.287
2003	63.876
2004	61.501
2005	59.245
2006	57.112
2007	55.196
2008	53.528
2009	52.126
2010	51.001
2011	50.437
2012	49.987
2013	49.7
2014	49.598
2015	49.651
2016	49.903
2017	50.188
2018	50.483
2019	50.745
2020	50.935
2021	50.962
2022	50.978
2023	50.91
2024	50.695
2025	50.324
2026	49.949
2027	49.436
2028	48.818
2029	48.156
2030	47.495
2031	46.914
2032	46.346
2033	45.82
2034	45.362
2035	44.993
2036	44.832
2037	44.735
2038	44.709
2039	44.746
2040	44.836
2041	45.057
2042	45.308
2043	45.596
2044	45.924
2045	46.291
2046	46.767
2047	47.249
2048	47.746
2049	48.276
2050	48.846
2051	49.518
2052	50.21
2053	50.888
2054	51.505
2055	52.034
2056	52.566
2057	53.012
2058	53.364
2059	53.613
2060	53.761
2061	53.914
2062	53.967
2063	53.94
2064	53.851
2065	53.714
2066	53.643
2067	53.52
2068	53.39
2069	53.307
2070	53.307
2071	53.514
2072	53.78
2073	54.107
2074	54.501
2075	54.958
2076	55.616
2077	56.323
2078	57.047
2079	57.733
2080	58.345
2081	59.019
2082	59.618
2083	60.132
2084	60.553
2085	60.878
2086	61.249
2087	61.528
2088	61.722
2089	61.841
2090	61.898
2091	62.004
2092	62.051
2093	62.059
2094	62.053
2095	62.056
2096	62.154
2097	62.252
2098	62.361
2099	62.495
2100	62.657