Year	Number
1960	2834454
1961	2893146
1962	2973346
1963	3061702
1964	3155321
1965	3252277
1966	3350237
1967	3448267
1968	3547698
1969	3644503
1970	3728900
1971	3801120
1972	3875095
1973	3957845
1974	4044757
1975	4133574
1976	4221680
1977	4308631
1978	4395084
1979	4479789
1980	4565340
1981	4651677
1982	4738695
1983	4825809
1984	4909155
1985	4988905
1986	5082663
1987	5192687
1988	5305524
1989	5238761
1990	5260801
1991	5290219
1992	5285092
1993	5269349
1994	5202005
1995	5112451
1996	5074692
1997	5056102
1998	5039348
1999	5050632
2000	5082687
2001	5123194
2002	5169062
2003	5226867
2004	5296294
2005	5369987
2006	5449251
2007	5531021
2008	5651333
2009	5775955
2010	5859023
2011	5924693
2012	5969405
2013	6002144
2014	6027273
2015	6046007
2016	6060597
2017	6073662
2018	6087722
2019	6103592
2020	6125706
2021	6221426
2022	6333252
2023	6396327