Year	Number
1971	5749301
1972	5807448
1973	5775880
1974	5692285
1975	5618768
1976	5599074
1977	5503737
1978	5514417
1979	5604365
1980	5640712
1981	5658002
1982	5586494
1983	5465248
1984	5257164
1985	5040958
1986	4856752
1987	4798323
1988	4771722
1989	4819857
1990	4894261
1991	4868520
1992	4758505
1993	4560128
1994	4347317
1995	4110302
1996	3915848
1997	3794447
1998	3844949
1999	3945977
2000	4030413
2001	4099649
2002	4148432
2003	4185330
2004	4125529
2005	4031590
2006	3933186
2007	3837761
2008	3679629
2009	3481764
2010	3306211
2011	3139724
2012	2959090
2013	2790890
2014	2736224
2015	2721766
2016	2680126
2017	2681815
2018	2719358
2019	2755682
2020	2702647
2021	2681829
2022	2674487