Year	Number
1950	70.767
1951	72.272
1952	72.479
1953	72.862
1954	73.886
1955	75.381
1956	76.96
1957	79.288
1958	81.675
1959	83.396
1960	84.145
1961	85.578
1962	85.761
1963	85.164
1964	84.477
1965	84.013
1966	84.272
1967	84.564
1968	84.792
1969	84.698
1970	84.158
1971	84.15
1972	83.694
1973	82.928
1974	82.104
1975	81.38
1976	81.037
1977	80.872
1978	80.806
1979	80.72
1980	80.581
1981	80.928
1982	81.09
1983	81.193
1984	81.411
1985	81.804
1986	82.374
1987	83.06
1988	83.728
1989	84.127
1990	84.091
1991	84.237
1992	83.712
1993	82.688
1994	81.427
1995	80.065
1996	78.195
1997	76.445
1998	74.687
1999	72.764
2000	70.674
2001	68.757
2002	66.802
2003	64.893
2004	63.138
2005	61.59
2006	60.6
2007	59.606
2008	58.772
2009	58.324
2010	58.365
2011	58.597
2012	59.473
2013	60.667
2014	61.69
2015	62.286
2016	63.308
2017	63.553
2018	63.36
2019	63.219
2020	63.325
2021	63.008
2022	63.094
2023	63.278
2024	63.134
2025	62.502
2026	61.811
2027	60.729
2028	59.419
2029	58.164
2030	57.116
2031	56.301
2032	55.643
2033	55.125
2034	54.688
2035	54.307
2036	54.109
2037	53.955
2038	53.864
2039	53.856
2040	53.934
2041	54.146
2042	54.397
2043	54.675
2044	54.963
2045	55.25
2046	55.53
2047	55.799
2048	56.048
2049	56.273
2050	56.474
2051	56.669
2052	56.837
2053	56.957
2054	57.003
2055	56.968
2056	56.873
2057	56.708
2058	56.49
2059	56.239
2060	55.972
2061	55.704
2062	55.417
2063	55.132
2064	54.88
2065	54.68
2066	54.534
2067	54.441
2068	54.387
2069	54.351
2070	54.321
2071	54.297
2072	54.268
2073	54.281
2074	54.406
2075	54.679
2076	55.089
2077	55.638
2078	56.27
2079	56.894
2080	57.451
2081	57.939
2082	58.375
2083	58.764
2084	59.126
2085	59.475
2086	59.766
2087	60.044
2088	60.313
2089	60.58
2090	60.852
2091	61.052
2092	61.26
2093	61.49
2094	61.76
2095	62.08
2096	62.329
2097	62.635
2098	62.998
2099	63.412
2100	63.873