Year	Number
1950	63.025
1951	65.091
1952	67.605
1953	69.499
1954	70.546
1955	71.067
1956	73.858
1957	75.457
1958	76.753
1959	78.565
1960	81.072
1961	83.598
1962	86.971
1963	90.398
1964	92.75
1965	93.592
1966	96.046
1967	97.27
1968	97.718
1969	98.025
1970	98.348
1971	96.704
1972	95.047
1973	93.396
1974	91.572
1975	89.532
1976	88.16
1977	86.562
1978	84.891
1979	83.22
1980	81.522
1981	79.476
1982	77.542
1983	75.758
1984	74.101
1985	72.575
1986	72.935
1987	73.215
1988	73.462
1989	73.742
1990	73.997
1991	71.014
1992	68.387
1993	66.101
1994	64.033
1995	62.105
1996	61.359
1997	60.397
1998	59.277
1999	58.168
2000	57.184
2001	54.458
2002	52.232
2003	50.409
2004	48.757
2005	47.083
2006	46.511
2007	45.698
2008	44.663
2009	43.55
2010	42.524
2011	42.584
2012	42.581
2013	42.696
2014	43.014
2015	43.522
2016	44.189
2017	44.968
2018	45.796
2019	46.581
2020	47.27
2021	47.78
2022	48.307
2023	48.783
2024	49.147
2025	49.395
2026	49.744
2027	49.961
2028	50.111
2029	50.303
2030	50.592
2031	51.013
2032	51.519
2033	52.126
2034	52.797
2035	53.538
2036	54.377
2037	55.284
2038	56.233
2039	57.212
2040	58.205
2041	59.202
2042	60.171
2043	61.133
2044	62.076
2045	63.021
2046	63.9
2047	64.76
2048	65.554
2049	66.249
2050	66.822
2051	67.247
2052	67.56
2053	67.77
2054	67.924
2055	68.024
2056	68.084
2057	68.117
2058	68.099
2059	67.977
2060	67.747
2061	67.418
2062	67.017
2063	66.565
2064	66.103
2065	65.65
2066	65.208
2067	64.792
2068	64.454
2069	64.26
2070	64.245
2071	64.404
2072	64.764
2073	65.29
2074	65.954
2075	66.739
2076	67.593
2077	68.591
2078	69.662
2079	70.692
2080	71.627
2081	72.383
2082	73.047
2083	73.636
2084	74.158
2085	74.631
2086	74.925
2087	75.208
2088	75.451
2089	75.664
2090	75.862
2091	75.91
2092	75.964
2093	76.045
2094	76.182
2095	76.373
2096	76.419
2097	76.52
2098	76.703
2099	76.965
2100	77.287