Year	Number
1960	3822787
1961	3970264
1962	4117568
1963	4265295
1964	4410881
1965	4552879
1966	4691289
1967	4824090
1968	4951512
1969	5073735
1970	5190726
1971	5302362
1972	5408544
1973	5511140
1974	5613979
1975	5720414
1976	5830691
1977	5943633
1978	6058904
1979	6176308
1980	6295036
1981	6413833
1982	6531693
1983	6648734
1984	6766450
1985	6885841
1986	7010504
1987	7139843
1988	7268113
1989	7392576
1990	7511302
1991	7622198
1992	7724037
1993	7816716
1994	7900555
1995	7976636
1996	8047004
1997	8113873
1998	8177754
1999	8237931
2000	8293837
2001	8341130
2002	8379492
2003	8413071
2004	8443750
2005	8473850
2006	8504158
2007	8534220
2008	8563657
2009	8591993
2010	8619013
2011	8643447
2012	8663718
2013	8679249
2014	8688672
2015	8691095
2016	8676097
2017	8611734
2018	8469719
2019	8287106
2020	8115290
2021	7944108
2022	7803975
2023	7710778