Year	Number
1950	75.736
1951	75.742
1952	75.812
1953	75.539
1954	74.875
1955	73.982
1956	74.719
1957	74.891
1958	74.818
1959	74.683
1960	74.485
1961	73.804
1962	73.372
1963	72.92
1964	72.109
1965	70.839
1966	69.636
1967	68.104
1968	66.388
1969	64.713
1970	63.192
1971	62.176
1972	61.121
1973	60.188
1974	59.513
1975	59.116
1976	58.421
1977	58.089
1978	57.876
1979	57.445
1980	56.642
1981	55.631
1982	54.358
1983	52.988
1984	51.77
1985	50.834
1986	50.46
1987	50.228
1988	50.128
1989	50.115
1990	50.139
1991	50.11
1992	50.085
1993	49.974
1994	49.687
1995	49.218
1996	48.891
1997	48.34
1998	47.683
1999	47.063
2000	46.538
2001	46.006
2002	45.614
2003	45.293
2004	44.918
2005	44.429
2006	43.968
2007	43.371
2008	42.714
2009	42.122
2010	41.671
2011	41.316
2012	41.122
2013	41.085
2014	41.181
2015	41.395
2016	41.964
2017	42.578
2018	43.241
2019	43.973
2020	44.756
2021	45.574
2022	46.436
2023	47.314
2024	48.146
2025	48.899
2026	49.628
2027	50.263
2028	50.831
2029	51.384
2030	51.955
2031	52.576
2032	53.204
2033	53.821
2034	54.398
2035	54.922
2036	55.438
2037	55.904
2038	56.347
2039	56.807
2040	57.315
2041	57.903
2042	58.521
2043	59.193
2044	59.944
2045	60.78
2046	61.746
2047	62.808
2048	63.928
2049	65.042
2050	66.109
2051	67.181
2052	68.193
2053	69.167
2054	70.139
2055	71.128
2056	72.112
2057	73.101
2058	74.068
2059	74.961
2060	75.742
2061	76.374
2062	76.909
2063	77.347
2064	77.708
2065	78.006
2066	78.201
2067	78.357
2068	78.462
2069	78.487
2070	78.417
2071	78.192
2072	77.904
2073	77.604
2074	77.355
2075	77.191
2076	77.046
2077	77.034
2078	77.124
2079	77.267
2080	77.443
2081	77.601
2082	77.829
2083	78.125
2084	78.47
2085	78.84
2086	79.121
2087	79.463
2088	79.84
2089	80.223
2090	80.601
2091	80.838
2092	81.101
2093	81.382
2094	81.668
2095	81.946
2096	82.028
2097	82.141
2098	82.273
2099	82.411
2100	82.558