Year	Number
1950	84.114
1951	83.681
1952	83.536
1953	82.908
1954	81.729
1955	80.139
1956	80.921
1957	80.677
1958	80.042
1959	79.481
1960	79.275
1961	77.711
1962	75.975
1963	74.149
1964	72.235
1965	70.325
1966	68.306
1967	66.218
1968	64.361
1969	62.816
1970	61.557
1971	60.655
1972	59.243
1973	57.584
1974	55.945
1975	54.56
1976	54.402
1977	54.197
1978	54.089
1979	54.158
1980	54.446
1981	50.769
1982	48.155
1983	46.278
1984	44.729
1985	43.266
1986	43.83
1987	43.711
1988	43.231
1989	42.659
1990	42.052
1991	40.878
1992	40.029
1993	39.48
1994	39.055
1995	38.654
1996	39.052
1997	39.096
1998	38.854
1999	38.471
2000	38.123
2001	36.019
2002	34.422
2003	33.464
2004	33.045
2005	32.909
2006	26.615
2007	22.468
2008	19.821
2009	18.144
2010	17.031
2011	17.857
2012	18.499
2013	19.11
2014	19.665
2015	20.055
2016	20.28
2017	20.349
2018	20.436
2019	20.64
2020	20.929
2021	21.098
2022	21.279
2023	21.534
2024	21.81
2025	22.025
2026	22.258
2027	22.311
2028	22.34
2029	22.493
2030	22.808
2031	23.206
2032	23.663
2033	24.214
2034	24.82
2035	25.423
2036	25.984
2037	26.504
2038	27.028
2039	27.549
2040	28.031
2041	28.41
2042	28.678
2043	28.975
2044	29.432
2045	30.092
2046	30.853
2047	31.756
2048	32.811
2049	33.954
2050	35.113
2051	36.211
2052	37.277
2053	38.391
2054	39.617
2055	40.969
2056	42.316
2057	43.698
2058	45.197
2059	46.85
2060	48.633
2061	50.39
2062	52.241
2063	54.158
2064	56.026
2065	57.738
2066	59.139
2067	60.326
2068	61.37
2069	62.341
2070	63.268
2071	63.909
2072	64.4
2073	64.888
2074	65.471
2075	66.146
2076	66.61
2077	67.148
2078	67.762
2079	68.409
2080	69.056
2081	69.481
2082	69.868
2083	70.285
2084	70.745
2085	71.207
2086	71.387
2087	71.53
2088	71.698
2089	71.893
2090	72.072
2091	72.016
2092	71.965
2093	71.94
2094	71.937
2095	71.952
2096	71.859
2097	71.742
2098	71.661
2099	71.677
2100	71.807