Year	Number
1950	78.413
1951	79.762
1952	81.308
1953	82.419
1954	82.977
1955	83.15
1956	83.977
1957	84.055
1958	83.86
1959	83.767
1960	83.903
1961	84.802
1962	85.891
1963	87.09
1964	88.231
1965	89.267
1966	91.067
1967	92.686
1968	94.191
1969	95.649
1970	97.075
1971	98.924
1972	100.414
1973	101.623
1974	102.587
1975	103.284
1976	103.934
1977	104.225
1978	104.136
1979	103.59
1980	102.567
1981	100.745
1982	98.509
1983	96.016
1984	93.433
1985	90.85
1986	89.143
1987	87.45
1988	85.669
1989	83.638
1990	81.294
1991	79.174
1992	76.579
1993	73.773
1994	71.093
1995	68.683
1996	66.045
1997	63.872
1998	61.963
1999	60.048
2000	58.04
2001	56.335
2002	54.524
2003	52.774
2004	51.316
2005	50.242
2006	49.71
2007	49.479
2008	49.464
2009	49.48
2010	49.402
2011	50.127
2012	50.751
2013	51.287
2014	51.815
2015	52.378
2016	51.988
2017	51.585
2018	51.133
2019	50.564
2020	49.856
2021	49.011
2022	48.105
2023	47.158
2024	46.213
2025	45.308
2026	44.567
2027	43.842
2028	43.186
2029	42.666
2030	42.314
2031	42.147
2032	42.131
2033	42.257
2034	42.498
2035	42.842
2036	43.311
2037	43.862
2038	44.493
2039	45.2
2040	45.977
2041	46.817
2042	47.688
2043	48.574
2044	49.446
2045	50.283
2046	51.036
2047	51.721
2048	52.345
2049	52.922
2050	53.459
2051	53.911
2052	54.31
2053	54.634
2054	54.853
2055	54.954
2056	54.937
2057	54.81
2058	54.614
2059	54.409
2060	54.233
2061	54.112
2062	54.019
2063	53.972
2064	53.985
2065	54.072
2066	54.286
2067	54.569
2068	54.942
2069	55.426
2070	56.028
2071	56.796
2072	57.675
2073	58.639
2074	59.647
2075	60.668
2076	61.722
2077	62.781
2078	63.828
2079	64.832
2080	65.767
2081	66.602
2082	67.362
2083	68.046
2084	68.663
2085	69.225
2086	69.663
2087	70.045
2088	70.379
2089	70.674
2090	70.933
2091	71.062
2092	71.168
2093	71.262
2094	71.359
2095	71.469
2096	71.497
2097	71.556
2098	71.658
2099	71.81
2100	72.012