Year	Number
1950	58.078
1951	57.438
1952	57.086
1953	56.713
1954	56.245
1955	55.714
1956	55.748
1957	55.463
1958	54.988
1959	54.477
1960	54.045
1961	54.516
1962	54.996
1963	55.589
1964	56.271
1965	56.96
1966	57.495
1967	58.021
1968	58.485
1969	58.865
1970	59.163
1971	58.996
1972	58.8
1973	58.507
1974	58.026
1975	57.335
1976	56.768
1977	55.931
1978	54.946
1979	53.97
1980	53.081
1981	52.13
1982	51.316
1983	50.645
1984	50.099
1985	49.685
1986	49.67
1987	49.721
1988	49.845
1989	50.037
1990	50.25
1991	50.685
1992	51.077
1993	51.388
1994	51.576
1995	51.617
1996	51.645
1997	51.574
1998	51.362
1999	50.972
2000	50.408
2001	50.258
2002	50.05
2003	49.754
2004	49.391
2005	49.009
2006	48.702
2007	48.364
2008	48.039
2009	47.782
2010	47.628
2011	47.969
2012	48.384
2013	48.847
2014	49.382
2015	50.066
2016	50.466
2017	50.911
2018	51.448
2019	52.098
2020	52.841
2021	53.669
2022	54.674
2023	55.764
2024	56.811
2025	57.751
2026	59.057
2027	60.192
2028	61.144
2029	61.922
2030	62.517
2031	63.01
2032	63.321
2033	63.502
2034	63.612
2035	63.691
2036	63.884
2037	64.094
2038	64.256
2039	64.296
2040	64.191
2041	64.129
2042	63.931
2043	63.663
2044	63.401
2045	63.177
2046	63.125
2047	63.098
2048	63.127
2049	63.243
2050	63.469
2051	63.939
2052	64.5
2053	65.165
2054	65.936
2055	66.792
2056	67.863
2057	69.05
2058	70.213
2059	71.16
2060	71.782
2061	72.212
2062	72.321
2063	72.177
2064	71.868
2065	71.442
2066	70.923
2067	70.323
2068	69.664
2069	68.98
2070	68.316
2071	67.731
2072	67.189
2073	66.732
2074	66.417
2075	66.274
2076	66.321
2077	66.543
2078	66.889
2079	67.272
2080	67.626
2081	67.972
2082	68.293
2083	68.622
2084	68.993
2085	69.41
2086	69.883
2087	70.431
2088	70.997
2089	71.514
2090	71.957
2091	72.33
2092	72.65
2093	72.915
2094	73.123
2095	73.269
2096	73.244
2097	73.17
2098	73.056
2099	72.93
2100	72.815