Year	Number
1960	2644173
1961	2743669
1962	2842652
1963	2938419
1964	3020913
1965	3099071
1966	3179965
1967	3262667
1968	3344174
1969	3423499
1970	3502257
1971	3578909
1972	3656286
1973	3735397
1974	3811926
1975	3887383
1976	3962016
1977	4036787
1978	4114243
1979	4194529
1980	4279212
1981	4367950
1982	4458144
1983	4546793
1984	4629195
1985	4702976
1986	4764630
1987	4812188
1988	4847570
1989	4871863
1990	4888358
1991	4900954
1992	4910156
1993	4911436
1994	4902671
1995	4887462
1996	4867005
1997	4842168
1998	4815694
1999	4787354
2000	4756678
2001	4724187
2002	4690596
2003	4657933
2004	4631319
2005	4609890
2006	4590057
2007	4574498
2008	4565896
2009	4567908
2010	4581664
2011	4605686
2012	4635290
2013	4668267
2014	4704269
2015	4739475
2016	4769502
2017	4796708
2018	4821662
2019	4839236
2020	4851422
2021	4858438
2022	4858928
2023	4853355