Year	Number
1950	56.885
1951	57.608
1952	57.992
1953	58.207
1954	58.337
1955	58.406
1956	59.252
1957	60.01
1958	60.667
1959	61.192
1960	61.574
1961	62.44
1962	63.099
1963	63.621
1964	64.09
1965	64.559
1966	65.631
1967	66.585
1968	67.449
1969	68.23
1970	68.93
1971	70.881
1972	72.575
1973	74.08
1974	75.464
1975	76.757
1976	78.377
1977	79.841
1978	81.145
1979	82.266
1980	83.208
1981	84.534
1982	85.612
1983	86.484
1984	87.2
1985	87.795
1986	88.747
1987	89.469
1988	90.015
1989	90.422
1990	90.697
1991	91.169
1992	91.432
1993	91.489
1994	91.337
1995	90.978
1996	90.573
1997	89.979
1998	89.204
1999	88.246
2000	87.114
2001	86.215
2002	85.104
2003	83.86
2004	82.581
2005	81.329
2006	80.233
2007	79.195
2008	78.198
2009	77.215
2010	76.247
2011	75.664
2012	75.036
2013	74.394
2014	73.753
2015	73.106
2016	72.641
2017	72.06
2018	71.407
2019	70.725
2020	70.029
2021	69.258
2022	68.534
2023	67.799
2024	66.979
2025	66.054
2026	65.223
2027	64.278
2028	63.283
2029	62.326
2030	61.453
2031	60.717
2032	60.035
2033	59.402
2034	58.792
2035	58.194
2036	57.682
2037	57.18
2038	56.695
2039	56.238
2040	55.814
2041	55.469
2042	55.141
2043	54.837
2044	54.565
2045	54.331
2046	54.164
2047	54.02
2048	53.898
2049	53.799
2050	53.722
2051	53.696
2052	53.676
2053	53.664
2054	53.656
2055	53.652
2056	53.669
2057	53.675
2058	53.675
2059	53.674
2060	53.677
2061	53.68
2062	53.684
2063	53.686
2064	53.681
2065	53.669
2066	53.66
2067	53.638
2068	53.617
2069	53.62
2070	53.659
2071	53.727
2072	53.817
2073	53.936
2074	54.092
2075	54.287
2076	54.516
2077	54.773
2078	55.049
2079	55.331
2080	55.609
2081	55.868
2082	56.119
2083	56.366
2084	56.613
2085	56.864
2086	57.102
2087	57.335
2088	57.568
2089	57.805
2090	58.048
2091	58.266
2092	58.488
2093	58.715
2094	58.949
2095	59.192
2096	59.406
2097	59.626
2098	59.855
2099	60.097
2100	60.354