Year	Number
1960	3379384
1961	3418275
1962	3469344
1963	3525588
1964	3597429
1965	3686008
1966	3781495
1967	3871734
1968	3949326
1969	4031579
1970	4103836
1971	4165699
1972	4235484
1973	4297152
1974	4345049
1975	4362696
1976	4362148
1977	4379387
1978	4402147
1979	4410815
1980	4380902
1981	4280861
1982	4133930
1983	3977596
1984	3868075
1985	3843012
1986	3863104
1987	3883003
1988	3896258
1989	3915508
1990	3957387
1991	4020864
1992	4110633
1993	4230489
1994	4358035
1995	4489050
1996	4611740
1997	4713201
1998	4805259
1999	4942819
2000	5141971
2001	5365451
2002	5598716
2003	5839908
2004	6107455
2005	6388908
2006	6644420
2007	6823552
2008	6943055
2009	7045929
2010	7083196
2011	6961151
2012	7021988
2013	7113319
2014	7237662
2015	7404683
2016	7556388
2017	7668349
2018	7775856
2019	7890312
2020	7993682
2021	8082457
2022	8243835
2023	8459086