Year	Number
1960	4429634
1961	4461005
1962	4491443
1963	4523309
1964	4548543
1965	4563732
1966	4580869
1967	4605744
1968	4626469
1969	4623785
1970	4606307
1971	4612124
1972	4639657
1973	4666081
1974	4690574
1975	4711440
1976	4725664
1977	4738902
1978	4752528
1979	4764690
1980	4779535
1981	4799964
1982	4826933
1983	4855787
1984	4881803
1985	4902206
1986	4918154
1987	4932123
1988	4946481
1989	4964371
1990	4986431
1991	5013740
1992	5041992
1993	5066447
1994	5088333
1995	5107790
1996	5124573
1997	5139835
1998	5153498
1999	5165474
2000	5176209
2001	5188008
2002	5200598
2003	5213014
2004	5228172
2005	5246096
2006	5266268
2007	5288720
2008	5313399
2009	5338871
2010	5363352
2011	5388272
2012	5413971
2013	5438972
2014	5461512
2015	5479531
2016	5495303
2017	5508214
2018	5515525
2019	5521606
2020	5529543
2021	5541017
2022	5556106
2023	5584264