Year	Number
1950	65.535
1951	66.02
1952	66.355
1953	66.87
1954	67.523
1955	68.155
1956	69.064
1957	70.064
1958	71.004
1959	71.823
1960	72.54
1961	72.579
1962	72.642
1963	72.649
1964	72.556
1965	72.366
1966	72.388
1967	72.111
1968	71.739
1969	71.568
1970	71.729
1971	71.151
1972	71.155
1973	71.429
1974	71.539
1975	71.296
1976	71.678
1977	71.403
1978	70.733
1979	70.061
1980	69.543
1981	69.247
1982	69.214
1983	69.24
1984	68.999
1985	68.332
1986	67.781
1987	66.856
1988	65.603
1989	64.204
1990	62.788
1991	60.838
1992	59.041
1993	57.339
1994	55.667
1995	54.032
1996	52.244
1997	50.607
1998	49.141
1999	47.896
2000	46.902
2001	46.016
2002	45.298
2003	44.777
2004	44.477
2005	44.401
2006	44.588
2007	44.944
2008	45.467
2009	46.096
2010	46.757
2011	48.136
2012	49.547
2013	50.949
2014	52.325
2015	53.657
2016	54.434
2017	55.126
2018	55.707
2019	56.141
2020	56.419
2021	56.405
2022	56.279
2023	56.091
2024	55.924
2025	55.835
2026	55.808
2027	55.87
2028	56.018
2029	56.227
2030	56.488
2031	56.739
2032	57.048
2033	57.47
2034	58.073
2035	58.901
2036	59.854
2037	61
2038	62.316
2039	63.742
2040	65.22
2041	66.6
2042	68.012
2043	69.434
2044	70.836
2045	72.193
2046	73.316
2047	74.382
2048	75.338
2049	76.114
2050	76.675
2051	76.824
2052	76.775
2053	76.57
2054	76.252
2055	75.846
2056	75.146
2057	74.417
2058	73.682
2059	72.988
2060	72.388
2061	71.708
2062	71.143
2063	70.733
2064	70.497
2065	70.42
2066	70.289
2067	70.348
2068	70.579
2069	70.964
2070	71.498
2071	71.994
2072	72.65
2073	73.443
2074	74.32
2075	75.234
2076	75.978
2077	76.771
2078	77.57
2079	78.336
2080	79.054
2081	79.499
2082	79.886
2083	80.229
2084	80.551
2085	80.861
2086	80.862
2087	80.851
2088	80.851
2089	80.881
2090	80.948
2091	80.741
2092	80.599
2093	80.531
2094	80.546
2095	80.651
2096	80.537
2097	80.539
2098	80.662
2099	80.904
2100	81.261