Year	Number
1960	3870000
1961	3911289
1962	3949507
1963	3985190
1964	4020764
1965	4052309
1966	4080320
1967	4106886
1968	4136512
1969	4168347
1970	4195535
1971	4218224
1972	4237148
1973	4258500
1974	4286205
1975	4305897
1976	4323270
1977	4344169
1978	4347145
1979	4350854
1980	4365707
1981	4377342
1982	4387238
1983	4394409
1984	4400314
1985	4395609
1986	4389586
1987	4391125
1988	4391111
1989	4335085
1990	4252523
1991	4205732
1992	4155659
1993	4116568
1994	4096028
1995	4071321
1996	4044623
1997	4015265
1998	3984016
1999	3958158
2000	3936609
2001	3857899
2002	3774971
2003	3745714
2004	3718227
2005	3691351
2006	3665020
2007	3640438
2008	3617711
2009	3597386
2010	3576521
2011	3555965
2012	3537445
2013	3519159
2014	3500151
2015	3478837
2016	3455141
2017	3430331
2018	3406489
2019	3383675
2020	3363373
2021	3335414
2022	3135133
2023	3118409