Year	Number
1960	3707515
1961	3784744
1962	3864140
1963	3945729
1964	4029472
1965	4115511
1966	4204065
1967	4295269
1968	4389249
1969	4486098
1970	4585693
1971	4688267
1972	4793804
1973	4902248
1974	5013765
1975	5127776
1976	5244355
1977	5363917
1978	5486132
1979	5610380
1980	5736088
1981	5862990
1982	5991118
1983	6120620
1984	6251926
1985	6385630
1986	6521983
1987	6661434
1988	6804072
1989	6949139
1990	7096194
1991	7244891
1992	7394419
1993	7544489
1994	7693722
1995	7841471
1996	7989367
1997	8137619
1998	8286928
1999	8439052
2000	8592656
2001	8746084
2002	8900583
2003	9057378
2004	9216279
2005	9377388
2006	9542663
2007	9711152
2008	9880593
2009	10051317
2010	10223270
2011	10396246
2012	10569697
2013	10743349
2014	10916987
2015	11090085
2016	11263015
2017	11435533
2018	11606905
2019	11777315
2020	11936162
2021	12079472
2022	12224110
2023	12388571