Year	Number
1950	71.852
1951	71.091
1952	69.327
1953	67.912
1954	67.202
1955	67.067
1956	67.08
1957	67.84
1958	68.894
1959	69.743
1960	70.155
1961	70.379
1962	70.374
1963	70.073
1964	69.485
1965	68.637
1966	68.381
1967	67.563
1968	66.447
1969	65.401
1970	64.589
1971	63.522
1972	62.863
1973	62.339
1974	61.535
1975	60.271
1976	59.151
1977	57.518
1978	55.61
1979	53.804
1980	52.293
1981	50.588
1982	49.339
1983	48.384
1984	47.461
1985	46.466
1986	46.063
1987	45.463
1988	44.832
1989	44.375
1990	44.1
1991	43.893
1992	43.922
1993	44.039
1994	44.106
1995	44.134
1996	43.956
1997	43.813
1998	43.672
1999	43.465
2000	43.149
2001	43.116
2002	42.728
2003	42.149
2004	41.596
2005	41.169
2006	40.334
2007	39.847
2008	39.598
2009	39.399
2010	39.19
2011	39.494
2012	39.638
2013	39.758
2014	40.09
2015	40.73
2016	41.486
2017	42.543
2018	43.799
2019	45.046
2020	46.163
2021	47.252
2022	48.217
2023	49.09
2024	49.974
2025	50.932
2026	51.998
2027	53.123
2028	54.251
2029	55.266
2030	56.093
2031	56.795
2032	57.311
2033	57.716
2034	58.154
2035	58.731
2036	59.429
2037	60.259
2038	61.191
2039	62.14
2040	63.037
2041	63.89
2042	64.691
2043	65.518
2044	66.502
2045	67.729
2046	69.244
2047	71.002
2048	72.941
2049	74.941
2050	76.912
2051	78.873
2052	80.824
2053	82.705
2054	84.405
2055	85.834
2056	86.931
2057	87.732
2058	88.321
2059	88.884
2060	89.567
2061	90.311
2062	91.198
2063	92.122
2064	92.848
2065	93.2
2066	93.03
2067	92.546
2068	91.871
2069	91.243
2070	90.843
2071	90.522
2072	90.421
2073	90.532
2074	90.763
2075	91.011
2076	91.134
2077	91.374
2078	91.676
2079	91.967
2080	92.219
2081	92.361
2082	92.531
2083	92.683
2084	92.794
2085	92.874
2086	92.764
2087	92.608
2088	92.479
2089	92.406
2090	92.343
2091	92.026
2092	91.824
2093	91.639
2094	91.41
2095	91.16
2096	90.788
2097	90.37
2098	89.969
2099	89.699
2100	89.597