Year	Number
1960	3764841
1961	3783524
1962	3804067
1963	3825209
1964	3847012
1965	3867107
1966	3888124
1967	3911038
1968	3927504
1969	3938506
1970	3949146
1971	3963093
1972	3981549
1973	3998726
1974	4005068
1975	3998352
1976	3992908
1977	3993560
1978	3990008
1979	3983555
1980	3982428
1981	3988575
1982	3987800
1983	3979057
1984	3975799
1985	3973845
1986	3971607
1987	3969220
1988	3969529
1989	3980843
1990	4002701
1991	4033849
1992	4071050
1993	4098726
1994	4110125
1995	4114132
1996	4118420
1997	4121782
1998	4124523
1999	4130055
2000	4136746
2001	4147958
2002	4163296
2003	4180186
2004	4203243
2005	4228220
2006	4246451
2007	4259257
2008	4271832
2009	4281722
2010	4290783
2011	4303100
2012	4319072
2013	4340305
2014	4368440
2015	4406154
2016	4444108
2017	4472047
2018	4492714
2019	4511982
2020	4529542
2021	4548093
2022	4590312
2023	4634336