Year	Number
1950	58.615
1951	58.27
1952	57.475
1953	56.634
1954	56.05
1955	55.823
1956	56.549
1957	57.253
1958	58.132
1959	59.236
1960	60.498
1961	61.802
1962	63.074
1963	64.2
1964	65.019
1965	65.457
1966	65.791
1967	65.672
1968	65.143
1969	64.388
1970	63.548
1971	62.21
1972	61.22
1973	60.422
1974	59.548
1975	58.452
1976	57.704
1977	56.7
1978	55.532
1979	54.433
1980	53.538
1981	52.765
1982	52.165
1983	51.734
1984	51.41
1985	51.159
1986	51.089
1987	51.058
1988	51.076
1989	51.194
1990	51.431
1991	52.135
1992	52.931
1993	53.739
1994	54.396
1995	54.77
1996	54.728
1997	54.387
1998	53.811
1999	53.146
2000	52.485
2001	51.994
2002	51.602
2003	51.126
2004	50.333
2005	49.143
2006	48.507
2007	47.564
2008	46.579
2009	45.844
2010	45.446
2011	45.544
2012	45.612
2013	45.629
2014	45.621
2015	45.673
2016	46.418
2017	47.304
2018	48.332
2019	49.44
2020	50.541
2021	51.468
2022	52.504
2023	53.518
2024	54.361
2025	54.997
2026	55.766
2027	56.276
2028	56.591
2029	56.817
2030	56.991
2031	57.13
2032	57.228
2033	57.304
2034	57.37
2035	57.462
2036	57.611
2037	57.826
2038	58.118
2039	58.504
2040	58.997
2041	59.645
2042	60.397
2043	61.252
2044	62.197
2045	63.216
2046	64.356
2047	65.522
2048	66.751
2049	68.094
2050	69.57
2051	71.133
2052	72.819
2053	74.549
2054	76.195
2055	77.66
2056	78.908
2057	79.995
2058	80.861
2059	81.465
2060	81.792
2061	81.823
2062	81.615
2063	81.161
2064	80.456
2065	79.508
2066	78.272
2067	76.856
2068	75.408
2069	74.124
2070	73.129
2071	72.371
2072	71.917
2073	71.764
2074	71.902
2075	72.324
2076	73.006
2077	74.015
2078	75.262
2079	76.569
2080	77.79
2081	78.86
2082	79.865
2083	80.783
2084	81.619
2085	82.383
2086	82.991
2087	83.55
2088	84.034
2089	84.42
2090	84.696
2091	84.725
2092	84.699
2093	84.597
2094	84.429
2095	84.219
2096	83.748
2097	83.235
2098	82.727
2099	82.31
2100	82.024