Year	Number
1950	53.3
1951	54.784
1952	56.015
1953	57.286
1954	58.61
1955	59.868
1956	60.778
1957	61.784
1958	62.665
1959	63.216
1960	63.357
1961	63.597
1962	63.372
1963	62.858
1964	62.305
1965	61.848
1966	61.266
1967	60.749
1968	60.333
1969	59.925
1970	59.406
1971	58.984
1972	58.545
1973	58.07
1974	57.505
1975	56.816
1976	56.478
1977	55.782
1978	54.923
1979	54.143
1980	53.55
1981	52.702
1982	52.204
1983	51.904
1984	51.574
1985	51.131
1986	50.95
1987	50.538
1988	50.043
1989	49.683
1990	49.536
1991	49.518
1992	49.702
1993	49.977
1994	50.167
1995	50.193
1996	50.229
1997	50.132
1998	49.954
1999	49.792
2000	49.689
2001	49.39
2002	49.131
2003	48.914
2004	48.73
2005	48.596
2006	48.256
2007	48.01
2008	47.913
2009	47.969
2010	48.156
2011	48.622
2012	49.09
2013	49.614
2014	50.231
2015	50.927
2016	51.726
2017	52.627
2018	53.564
2019	54.437
2020	55.199
2021	56.03
2022	56.699
2023	57.269
2024	57.85
2025	58.492
2026	59.056
2027	59.71
2028	60.372
2029	60.915
2030	61.276
2031	61.465
2032	61.486
2033	61.423
2034	61.415
2035	61.539
2036	61.701
2037	61.997
2038	62.368
2039	62.7
2040	62.919
2041	62.971
2042	62.952
2043	62.92
2044	62.977
2045	63.195
2046	63.489
2047	63.927
2048	64.482
2049	65.093
2050	65.712
2051	66.229
2052	66.772
2053	67.328
2054	67.875
2055	68.395
2056	68.776
2057	69.155
2058	69.5
2059	69.79
2060	70.028
2061	70.088
2062	70.106
2063	70.121
2064	70.152
2065	70.189
2066	70.066
2067	69.996
2068	69.958
2069	69.968
2070	70.07
2071	70.106
2072	70.229
2073	70.463
2074	70.794
2075	71.177
2076	71.376
2077	71.656
2078	71.999
2079	72.4
2080	72.874
2081	73.224
2082	73.66
2083	74.167
2084	74.719
2085	75.294
2086	75.662
2087	76.063
2088	76.492
2089	76.949
2090	77.435
2091	77.708
2092	78.01
2093	78.347
2094	78.723
2095	79.139
2096	79.314
2097	79.537
2098	79.813
2099	80.145
2100	80.53