Year	Number
1950	53.002
1951	52.902
1952	52.284
1953	51.79
1954	51.571
1955	51.541
1956	51.558
1957	51.913
1958	52.354
1959	52.604
1960	52.534
1961	52.525
1962	52.299
1963	51.869
1964	51.327
1965	50.735
1966	50.39
1967	49.861
1968	49.254
1969	48.722
1970	48.36
1971	48.221
1972	48.322
1973	48.561
1974	48.765
1975	48.846
1976	49.06
1977	49.078
1978	48.954
1979	48.754
1980	48.5
1981	47.977
1982	47.419
1983	46.869
1984	46.358
1985	45.914
1986	45.867
1987	45.824
1988	45.783
1989	45.747
1990	45.698
1991	46.02
1992	46.343
1993	46.655
1994	46.975
1995	47.336
1996	47.558
1997	47.925
1998	48.364
1999	48.751
2000	49.004
2001	49.46
2002	49.586
2003	49.491
2004	49.337
2005	49.205
2006	48.916
2007	48.867
2008	48.986
2009	49.144
2010	49.303
2011	49.738
2012	49.996
2013	50.197
2014	50.544
2015	51.121
2016	51.763
2017	52.645
2018	53.667
2019	54.638
2020	55.455
2021	56.294
2022	56.992
2023	57.578
2024	58.135
2025	58.707
2026	59.379
2027	60.053
2028	60.71
2029	61.297
2030	61.779
2031	62.235
2032	62.609
2033	62.935
2034	63.291
2035	63.741
2036	64.304
2037	64.942
2038	65.658
2039	66.429
2040	67.222
2041	68.01
2042	68.832
2043	69.68
2044	70.549
2045	71.436
2046	72.361
2047	73.306
2048	74.257
2049	75.187
2050	76.075
2051	76.879
2052	77.667
2053	78.406
2054	79.042
2055	79.535
2056	79.818
2057	79.975
2058	80.067
2059	80.212
2060	80.493
2061	80.806
2062	81.28
2063	81.845
2064	82.352
2065	82.693
2066	82.729
2067	82.634
2068	82.484
2069	82.414
2070	82.514
2071	82.624
2072	82.923
2073	83.367
2074	83.863
2075	84.341
2076	84.656
2077	85.004
2078	85.37
2079	85.739
2080	86.1
2081	86.272
2082	86.467
2083	86.663
2084	86.851
2085	87.045
2086	87.011
2087	86.979
2088	86.996
2089	87.077
2090	87.191
2091	87.053
2092	87.02
2093	87.034
2094	87.058
2095	87.107
2096	87.011
2097	86.927
2098	86.891
2099	86.964
2100	87.161