Year	Number
1960	3292834
1961	3339938
1962	3386803
1963	3431287
1964	3475920
1965	3522918
1966	3569375
1967	3615811
1968	3662394
1969	3709030
1970	3755790
1971	3802557
1972	3866818
1973	3935276
1974	4005556
1975	4078945
1976	4155365
1977	4234625
1978	4316550
1979	4400737
1980	4486792
1981	4575440
1982	4667175
1983	4716622
1984	4755371
1985	4792764
1986	4828817
1987	4863234
1988	4895408
1989	4924962
1990	4950919
1991	4971606
1992	4986400
1993	5040049
1994	5091515
1995	5141574
1996	5190756
1997	5240477
1998	5288834
1999	5336468
2000	5383985
2001	5341024
2002	5289173
2003	5230508
2004	5226430
2005	5226768
2006	5225816
2007	5221587
2008	5213626
2009	5203167
2010	5166626
2011	5127267
2012	5107137
2013	5083401
2014	5056010
2015	5025496
2016	4993082
2017	4959642
2018	4924975
2019	4889165
2020	4851974
2021	4812100
2022	4770701
2023	4730238