Year	Number
1950	51.62
1951	52.641
1952	52.992
1953	53.616
1954	54.686
1955	55.997
1956	56.688
1957	57.988
1958	59.396
1959	60.432
1960	60.91
1961	61.407
1962	61.322
1963	60.857
1964	60.375
1965	60.047
1966	60.116
1967	60.164
1968	60.208
1969	60.229
1970	60.214
1971	60.126
1972	60.051
1973	59.939
1974	59.698
1975	59.272
1976	59.108
1977	58.73
1978	58.127
1979	57.309
1980	56.302
1981	55.063
1982	53.783
1983	52.559
1984	51.511
1985	50.726
1986	50.656
1987	50.689
1988	50.816
1989	51.017
1990	51.244
1991	51.535
1992	51.875
1993	52.237
1994	52.563
1995	52.827
1996	53.044
1997	53.25
1998	53.417
1999	53.53
2000	53.593
2001	53.776
2002	53.897
2003	53.976
2004	54.021
2005	54.036
2006	54.103
2007	54.146
2008	54.232
2009	54.485
2010	54.992
2011	55.761
2012	56.775
2013	57.961
2014	59.173
2015	60.267
2016	61.054
2017	61.736
2018	62.353
2019	62.919
2020	63.476
2021	64
2022	64.508
2023	65.034
2024	65.605
2025	66.224
2026	66.779
2027	67.412
2028	68.098
2029	68.794
2030	69.482
2031	70.048
2032	70.619
2033	71.195
2034	71.809
2035	72.486
2036	73.033
2037	73.617
2038	74.236
2039	74.824
2040	75.305
2041	75.443
2042	75.529
2043	75.563
2044	75.584
2045	75.648
2046	75.593
2047	75.604
2048	75.675
2049	75.782
2050	75.897
2051	75.812
2052	75.772
2053	75.763
2054	75.759
2055	75.742
2056	75.506
2057	75.291
2058	75.115
2059	75.008
2060	74.996
2061	74.86
2062	74.834
2063	74.927
2064	75.125
2065	75.408
2066	75.548
2067	75.81
2068	76.151
2069	76.54
2070	76.973
2071	77.214
2072	77.491
2073	77.83
2074	78.241
2075	78.699
2076	78.896
2077	79.16
2078	79.471
2079	79.811
2080	80.182
2081	80.317
2082	80.506
2083	80.742
2084	81.02
2085	81.344
2086	81.414
2087	81.53
2088	81.714
2089	81.975
2090	82.304
2091	82.366
2092	82.513
2093	82.739
2094	83.033
2095	83.393
2096	83.496
2097	83.686
2098	83.963
2099	84.317
2100	84.742