Year	Number
1950	82.414
1951	82.492
1952	82.1
1953	81.725
1954	81.626
1955	81.739
1956	81.056
1957	80.74
1958	80.551
1959	80.18
1960	79.561
1961	83.067
1962	85.995
1963	88.981
1964	92.151
1965	94.88
1966	93.387
1967	92.177
1968	91.353
1969	90.751
1970	90.207
1971	87.029
1972	82.947
1973	78.733
1974	75.094
1975	72.281
1976	68.174
1977	64.867
1978	62.215
1979	59.926
1980	57.811
1981	57.109
1982	56.765
1983	56.667
1984	56.686
1985	56.707
1986	56.469
1987	55.871
1988	55.185
1989	54.46
1990	53.553
1991	53.129
1992	52.249
1993	51.058
1994	49.727
1995	48.489
1996	48.358
1997	48.078
1998	48.139
1999	48.699
2000	49.579
2001	46.952
2002	44.835
2003	43.257
2004	42.035
2005	40.971
2006	37.032
2007	33.847
2008	31.315
2009	29.328
2010	27.796
2011	28.594
2012	29.353
2013	30.136
2014	30.863
2015	31.382
2016	31.278
2017	30.962
2018	30.564
2019	30.245
2020	30.068
2021	29.813
2022	29.768
2023	29.849
2024	29.893
2025	29.814
2026	29.857
2027	29.701
2028	29.502
2029	29.427
2030	29.53
2031	29.67
2032	29.911
2033	30.294
2034	30.795
2035	31.382
2036	32.01
2037	32.694
2038	33.435
2039	34.206
2040	34.972
2041	35.674
2042	36.322
2043	36.993
2044	37.771
2045	38.693
2046	39.656
2047	40.713
2048	41.863
2049	43.044
2050	44.202
2051	45.252
2052	46.223
2053	47.196
2054	48.22
2055	49.308
2056	50.357
2057	51.417
2058	52.512
2059	53.636
2060	54.769
2061	55.796
2062	56.801
2063	57.791
2064	58.719
2065	59.535
2066	60.115
2067	60.55
2068	60.935
2069	61.392
2070	61.992
2071	62.596
2072	63.287
2073	64.1
2074	65.008
2075	65.959
2076	66.804
2077	67.699
2078	68.6
2079	69.419
2080	70.092
2081	70.489
2082	70.711
2083	70.847
2084	70.99
2085	71.171
2086	71.212
2087	71.282
2088	71.401
2089	71.552
2090	71.703
2091	71.709
2092	71.743
2093	71.819
2094	71.939
2095	72.099
2096	72.142
2097	72.198
2098	72.3
2099	72.478
2100	72.728