Year	Number
1960	3491177
1961	3699454
1962	3862289
1963	4002454
1964	4120667
1965	4220385
1966	4306206
1967	4379569
1968	4439055
1969	4481687
1970	4509529
1971	4522175
1972	4522516
1973	4514242
1974	4498870
1975	4480090
1976	4460564
1977	4448883
1978	4447044
1979	4457531
1980	4484245
1981	4528246
1982	4591817
1983	4674835
1984	4773389
1985	4877382
1986	4989003
1987	5105773
1988	5216675
1989	5158123
1990	5186154
1991	5202465
1992	5176101
1993	5131219
1994	5031223
1995	4899190
1996	4759526
1997	4583797
1998	4395050
1999	4259683
2000	4160674
2001	4047061
2002	3934086
2003	3838603
2004	3772268
2005	3733649
2006	3724192
2007	3745340
2008	3821703
2009	3923407
2010	4019014
2011	4134698
2012	4268719
2013	4415125
2014	4572667
2015	4736943
2016	4902225
2017	5060754
2018	5209185
2019	5348629
2020	5484992
2021	5667708
2022	5824865
2023	5897362