Year	Number
1950	73.696
1951	74.16
1952	74.052
1953	73.633
1954	73.024
1955	72.242
1956	72.594
1957	72.664
1958	72.447
1959	71.953
1960	71.224
1961	71.827
1962	71.962
1963	71.776
1964	71.436
1965	71.026
1966	71.799
1967	72.306
1968	72.605
1969	72.742
1970	72.768
1971	73.876
1972	74.756
1973	75.47
1974	76.058
1975	76.548
1976	78.016
1977	79.19
1978	80.152
1979	80.988
1980	81.734
1981	83.24
1982	84.502
1983	85.533
1984	86.357
1985	87.02
1986	88.305
1987	89.288
1988	89.963
1989	90.198
1990	89.812
1991	90.529
1992	90.768
1993	90.507
1994	89.897
1995	89.172
1996	89.216
1997	88.915
1998	88.422
1999	87.922
2000	87.634
2001	87.813
2002	87.699
2003	87.453
2004	87.092
2005	86.517
2006	86.692
2007	86.731
2008	86.542
2009	86.08
2010	85.371
2011	85.158
2012	84.62
2013	83.841
2014	82.925
2015	81.925
2016	81.044
2017	80.132
2018	79.137
2019	77.987
2020	76.673
2021	75.664
2022	74.454
2023	73.125
2024	71.787
2025	70.5
2026	69.456
2027	68.428
2028	67.403
2029	66.349
2030	65.261
2031	64.379
2032	63.453
2033	62.499
2034	61.542
2035	60.6
2036	59.866
2037	59.113
2038	58.35
2039	57.586
2040	56.828
2041	56.24
2042	55.637
2043	55.024
2044	54.407
2045	53.793
2046	53.331
2047	52.854
2048	52.363
2049	51.863
2050	51.36
2051	50.995
2052	50.605
2053	50.198
2054	49.781
2055	49.361
2056	49.061
2057	48.744
2058	48.417
2059	48.089
2060	47.765
2061	47.578
2062	47.375
2063	47.164
2064	46.955
2065	46.759
2066	46.697
2067	46.623
2068	46.546
2069	46.47
2070	46.404
2071	46.473
2072	46.527
2073	46.566
2074	46.584
2075	46.584
2076	46.692
2077	46.761
2078	46.803
2079	46.829
2080	46.849
2081	46.994
2082	47.111
2083	47.204
2084	47.276
2085	47.333
2086	47.52
2087	47.669
2088	47.787
2089	47.883
2090	47.964
2091	48.185
2092	48.368
2093	48.52
2094	48.647
2095	48.753
2096	49.007
2097	49.217
2098	49.388
2099	49.529
2100	49.646