Year	Number
1950	75.017
1951	75.415
1952	75.733
1953	76.013
1954	76.496
1955	77.288
1956	78.781
1957	80.148
1958	81.349
1959	82.262
1960	82.778
1961	85.518
1962	87.184
1963	87.72
1964	87.338
1965	86.309
1966	83.955
1967	81.455
1968	78.781
1969	75.873
1970	72.783
1971	69.731
1972	66.92
1973	64.209
1974	61.445
1975	58.586
1976	56.297
1977	53.595
1978	50.816
1979	48.404
1980	46.573
1981	44.88
1982	43.872
1983	43.296
1984	42.738
1985	41.986
1986	41.091
1987	39.87
1988	38.59
1989	37.605
1990	37.09
1991	37.206
1992	37.797
1993	38.689
1994	39.522
1995	40.046
1996	40.818
1997	41.05
1998	40.884
1999	40.615
2000	40.449
2001	39.662
2002	38.997
2003	38.458
2004	38.011
2005	37.685
2006	37.553
2007	37.341
2008	36.918
2009	36.343
2010	35.784
2011	35.814
2012	36.029
2013	36.393
2014	36.859
2015	37.407
2016	38.066
2017	38.797
2018	39.614
2019	40.544
2020	41.6
2021	42.75
2022	44.038
2023	45.436
2024	46.91
2025	48.446
2026	49.959
2027	51.527
2028	53.13
2029	54.74
2030	56.341
2031	57.812
2032	59.24
2033	60.647
2034	62.094
2035	63.632
2036	65.077
2037	66.579
2038	68.132
2039	69.695
2040	71.221
2041	72.518
2042	73.783
2043	74.995
2044	76.154
2045	77.285
2046	78.224
2047	79.131
2048	80.01
2049	80.847
2050	81.631
2051	82.189
2052	82.699
2053	83.206
2054	83.788
2055	84.502
2056	85.191
2057	86.033
2058	86.975
2059	87.939
2060	88.889
2061	89.682
2062	90.466
2063	91.257
2064	92.045
2065	92.797
2066	93.362
2067	93.939
2068	94.489
2069	94.977
2070	95.411
2071	95.706
2072	96.002
2073	96.307
2074	96.612
2075	96.903
2076	97.1
2077	97.373
2078	97.676
2079	97.956
2080	98.196
2081	98.354
2082	98.558
2083	98.822
2084	99.103
2085	99.335
2086	99.519
2087	99.819
2088	100.148
2089	100.422
2090	100.636
2091	100.875
2092	101.197
2093	101.575
2094	101.942
2095	102.241
2096	102.541
2097	102.924
2098	103.321
2099	103.646
2100	103.868