Year	Number
1960	3262539
1961	3325333
1962	3387512
1963	3448532
1964	3507959
1965	3565517
1966	3620849
1967	3673367
1968	3723067
1969	3770376
1970	3815561
1971	3859242
1972	3901895
1973	3943152
1974	3983063
1975	4022090
1976	4060039
1977	4096516
1978	4131521
1979	4165511
1980	4199820
1981	4235970
1982	4274013
1983	4312521
1984	4349597
1985	4383306
1986	4413374
1987	4440300
1988	4463320
1989	4481230
1990	4494310
1991	4502386
1992	4275730
1993	3942981
1994	3762330
1995	3750527
1996	3907751
1997	4047748
1998	4115059
1999	4153014
2000	4179350
2001	4194932
2002	4198410
2003	4183757
2004	4142860
2005	4094297
2006	4058086
2007	4007876
2008	3943392
2009	3877750
2010	3811088
2011	3743142
2012	3674374
2013	3617559
2014	3571068
2015	3524324
2016	3480986
2017	3440027
2018	3400129
2019	3360711
2020	3318407
2021	3270943
2022	3233526
2023	3210847