Year	Number
1950	57.722
1951	57.579
1952	57.282
1953	57.183
1954	57.31
1955	57.551
1956	57.863
1957	58.32
1958	58.76
1959	59.062
1960	59.213
1961	59.367
1962	59.561
1963	59.82
1964	60.139
1965	60.45
1966	61.219
1967	61.684
1968	61.899
1969	62.049
1970	62.297
1971	61.859
1972	61.604
1973	61.483
1974	61.328
1975	61.037
1976	61.032
1977	60.782
1978	60.355
1979	59.853
1980	59.31
1981	58.586
1982	57.862
1983	57.148
1984	56.421
1985	55.659
1986	55.016
1987	54.296
1988	53.489
1989	52.648
1990	51.844
1991	51.069
1992	50.362
1993	49.741
1994	49.197
1995	48.716
1996	48.457
1997	48.184
1998	47.933
1999	47.764
2000	47.714
2001	47.732
2002	47.858
2003	48.069
2004	48.278
2005	48.412
2006	49.078
2007	49.624
2008	50.062
2009	50.458
2010	50.877
2011	51.322
2012	51.804
2013	52.335
2014	52.901
2015	53.48
2016	53.876
2017	54.274
2018	54.689
2019	55.13
2020	55.606
2021	56.023
2022	56.486
2023	57.01
2024	57.618
2025	58.335
2026	59.099
2027	59.996
2028	61.003
2029	62.072
2030	63.17
2031	64.216
2032	65.275
2033	66.395
2034	67.657
2035	69.109
2036	70.588
2037	72.246
2038	74.039
2039	75.877
2040	77.685
2041	79.291
2042	80.875
2043	82.394
2044	83.806
2045	85.084
2046	86.029
2047	86.837
2048	87.507
2049	88.047
2050	88.467
2051	88.545
2052	88.53
2053	88.461
2054	88.379
2055	88.309
2056	88.022
2057	87.81
2058	87.664
2059	87.591
2060	87.621
2061	87.519
2062	87.542
2063	87.71
2064	88.007
2065	88.391
2066	88.587
2067	88.921
2068	89.351
2069	89.832
2070	90.355
2071	90.703
2072	91.12
2073	91.588
2074	92.086
2075	92.601
2076	92.857
2077	93.133
2078	93.422
2079	93.717
2080	94.015
2081	93.995
2082	93.975
2083	93.971
2084	93.995
2085	94.05
2086	93.764
2087	93.531
2088	93.363
2089	93.271
2090	93.26
2091	92.971
2092	92.803
2093	92.746
2094	92.784
2095	92.915
2096	92.805
2097	92.806
2098	92.913
2099	93.125
2100	93.443