Year	Number
1950	75.493
1951	76.106
1952	76.643
1953	76.807
1954	76.528
1955	75.885
1956	76.806
1957	77.141
1958	77.145
1959	77.102
1960	77.158
1961	78.435
1962	79.677
1963	80.852
1964	81.851
1965	82.616
1966	84.303
1967	85.634
1968	86.671
1969	87.5
1970	88.167
1971	89.62
1972	90.77
1973	91.653
1974	92.301
1975	92.742
1976	93.793
1977	94.543
1978	95.041
1979	95.335
1980	95.46
1981	96.192
1982	96.633
1983	96.848
1984	96.903
1985	96.832
1986	97.318
1987	97.568
1988	97.627
1989	97.54
1990	97.339
1991	96.984
1992	96.435
1993	95.754
1994	94.966
1995	94.079
1996	94.351
1997	94.382
1998	94.222
1999	93.936
2000	93.567
2001	93.054
2002	92.405
2003	91.65
2004	90.794
2005	89.846
2006	89.429
2007	88.825
2008	88.07
2009	87.197
2010	86.223
2011	85.61
2012	84.853
2013	83.979
2014	83.013
2015	81.982
2016	81.156
2017	80.254
2018	79.288
2019	78.272
2020	77.219
2021	76.435
2022	75.563
2023	74.643
2024	73.716
2025	72.805
2026	72.12
2027	71.41
2028	70.679
2029	69.923
2030	69.143
2031	68.55
2032	67.903
2033	67.216
2034	66.502
2035	65.773
2036	65.208
2037	64.596
2038	63.951
2039	63.285
2040	62.607
2041	62.078
2042	61.511
2043	60.919
2044	60.315
2045	59.707
2046	59.243
2047	58.753
2048	58.246
2049	57.73
2050	57.215
2051	56.841
2052	56.441
2053	56.028
2054	55.613
2055	55.206
2056	54.933
2057	54.644
2058	54.344
2059	54.04
2060	53.736
2061	53.556
2062	53.352
2063	53.134
2064	52.913
2065	52.695
2066	52.595
2067	52.473
2068	52.336
2069	52.188
2070	52.036
2071	51.984
2072	51.906
2073	51.807
2074	51.693
2075	51.568
2076	51.537
2077	51.474
2078	51.389
2079	51.294
2080	51.198
2081	51.199
2082	51.178
2083	51.141
2084	51.092
2085	51.036
2086	51.079
2087	51.094
2088	51.088
2089	51.072
2090	51.054
2091	51.131
2092	51.187
2093	51.226
2094	51.253
2095	51.271
2096	51.399
2097	51.498
2098	51.574
2099	51.637
2100	51.695