Year	Number
1950	84.879
1951	83.999
1952	82.771
1953	81.508
1954	80.343
1955	79.261
1956	78.666
1957	78.205
1958	77.784
1959	77.362
1960	76.972
1961	77.705
1962	78.137
1963	78.485
1964	78.999
1965	79.756
1966	81.016
1967	82.408
1968	83.813
1969	85.017
1970	85.903
1971	86.906
1972	87.561
1973	87.94
1974	88.167
1975	88.316
1976	88.438
1977	88.422
1978	88.303
1979	88.102
1980	87.843
1981	87.807
1982	87.606
1983	87.33
1984	87.075
1985	86.885
1986	87.319
1987	87.785
1988	88.202
1989	88.428
1990	88.379
1991	88.872
1992	88.913
1993	88.625
1994	88.175
1995	87.631
1996	86.884
1997	86.112
1998	85.208
1999	84.007
2000	82.458
2001	81.028
2002	79.228
2003	77.247
2004	75.365
2005	73.726
2006	72.262
2007	71.137
2008	70.217
2009	69.315
2010	68.361
2011	67.839
2012	67.15
2013	66.415
2014	65.782
2015	65.295
2016	64.968
2017	64.691
2018	64.435
2019	64.124
2020	63.717
2021	63.293
2022	62.791
2023	62.197
2024	61.514
2025	60.754
2026	60.035
2027	59.241
2028	58.393
2029	57.526
2030	56.667
2031	55.925
2032	55.188
2033	54.471
2034	53.784
2035	53.137
2036	52.643
2037	52.172
2038	51.736
2039	51.349
2040	51.015
2041	50.823
2042	50.654
2043	50.51
2044	50.388
2045	50.286
2046	50.267
2047	50.24
2048	50.211
2049	50.193
2050	50.19
2051	50.257
2052	50.321
2053	50.371
2054	50.395
2055	50.39
2056	50.416
2057	50.405
2058	50.363
2059	50.307
2060	50.245
2061	50.246
2062	50.232
2063	50.202
2064	50.146
2065	50.065
2066	50.027
2067	49.952
2068	49.872
2069	49.821
2070	49.824
2071	49.938
2072	50.082
2073	50.256
2074	50.462
2075	50.697
2076	51.029
2077	51.373
2078	51.726
2079	52.077
2080	52.42
2081	52.821
2082	53.202
2083	53.562
2084	53.898
2085	54.21
2086	54.558
2087	54.875
2088	55.165
2089	55.433
2090	55.682
2091	55.966
2092	56.226
2093	56.472
2094	56.714
2095	56.962
2096	57.256
2097	57.548
2098	57.846
2099	58.158
2100	58.49